June 18, 2008

Ms. Sheila Stout
Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C. 20549

ATTN: Document Control - EDGAR

RE: RIVERSOURCE BOND SERIES, INC. (FILE NOS. 2-72174/811-3178)
         RiverSource Limited Duration Bond Fund
    RIVERSOURCE GOVERNMENT INCOME SERIES, INC. (FILE NOS. 2-96512/811-4260)
         RiverSource U.S. Government Mortgage Fund

Dear Ms. Stout,

This letter responds to your comments received by telephone on May 29, 2008 for
the above-referenced Funds.

RIVERSOURCE LIMITED DURATION BOND FUND

COMMENT: Is a high portfolio turnover rate typical for this Fund? If so, should
the principal investment strategies that cause such a high portfolio turnover
rate be included in the principal investment strategies and should corresponding
risks be included?

RESPONSE: The higher portfolio turnover rate is largely attributable to "roll"
transactions involving Treasury securities and mortgage dollar rolls. The Fund
accounts for these roll transactions as purchases and sales, which has the
effect of increasing its portfolio turnover rate. See Note No. 1 to the "Notes
to Financial Statements - Summary of Significant Accounting Policies":

     SECURITIES PURCHASED ON A FORWARD-COMMITMENT BASIS
     . . . .

     The Fund also enters into transactions to sell purchase commitments to
     third parties at current market values and concurrently acquires other
     purchase commitments for similar securities at later dates. As an
     inducement for the Fund to "roll over" its purchase commitments, the Fund
     receives negotiated amounts in the form of reductions of the purchase price
     of the commitment.

In addition, with respect to the Fund's portfolio turnover rate for the fiscal
year ended July 31, 2007, the following note-disclosure was made on page 9 of
the Shareholder Report in management discussion of Fund performance under the
heading "Questions and Answers":

     A significant portion of the turnover was the result of "roll" transactions
     in the liquid derivatives and Treasury securities. In the derivative
     transactions, positions in expiring contracts are liquidated and
     simultaneously replaced with positions in new contracts with equivalent
     characteristics. In the Treasury transactions, existing holdings are sold
     to purchase newly issued securities with slightly longer maturity dates.
     Although these transactions



     affect the turnover rate of the portfolio, they do not change the risk
     exposure or result in material transactions costs. The remaining turnover
     resulted from strategic reallocations and relative value trading. After
     transaction costs, we expect this activity to enhance the returns on the
     overall Fund.

For the six-month period ended January 31, 2008, the portfolio turnover rate was
159%. We have reviewed the disclosure in the Fund's prospectus and believe that
it accurately describes the Fund's investment strategies and the principal risks
related thereto.

COMMENT: Under the section "Investment in Securities," under the line that
indicates investment in RiverSource Short Term Cash Fund, include the rate at
year-end.

RESPONSE: A rate was not reported for the investment in the RiverSource Short
Term Cash Fund as of July 31, 2007. We are not aware of any specific reporting
requirement, but recognize that practices vary. Going-forward, based on SEC
comment, we will begin reporting the 7-day yield for the RiverSource Short-Term
Cash Fund at the end of the relevant fiscal period (commencing with the July 31,
2008 shareholder report for this Fund, and, as appropriate, for other
RiverSource Funds that invest in the RiverSource Short-Term Cash Fund).

COMMENT: If there are any "when issued" securities, identify them (audit guide
requirement).

RESPONSE: All "when issued" securities have been identified and disclosed in the
financial statements for the year ended July 31, 2007. See Note No. 1 in the
"Notes to Financial Statements - Summary of Significant Accounting Policies":

     SECURITIES PURCHASED ON A FORWARD-COMMITMENT BASIS

     Delivery and payment for securities that have been purchased by the Fund on
     a forward-commitment basis, including when-issued securities and other
     forward commitments, can take place one month or more after the transaction
     date. During this period, such securities are subject to market
     fluctuations, and they may affect the Fund's net assets the same as owned
     securities. The Fund designates cash or liquid securities at least equal to
     the amount of its forward-commitments. At July 31, 2007, the Fund has
     entered into outstanding when-issued securities of $16,126,734.
     . . . .

See also Note (b) in the "Notes to Investments in Securities":

     At July 31, 2007, the cost of securities purchased, including interest
     purchased, on a when-issued and/or other forward-commitment basis was
     $16,126,734.

The following specific securities in the "Investments in Securities" are
referenced to Note (b) (above) indicating those securities have been acquired on
a when-issued basis:



RIVERSOURCE LIMITED DURATION BOND FUND
Annual Report for 7/31/07
Securities purchased on a when-issue basis



                    PRINCIPAL
ISSUER     COUPON     AMOUNT       VALUE
------     ------   ---------    ---------
                        
BONDS
MORTGAGE-BACKED
Federal Home Loan Mtge Corp
08/01/37   6.50     4,000,000(b) 4,045,000

Federal Natl Mtge Assn
08/01/22   6.00     1,000,000(b) 1,005,938
08/01/37   5.00       500,000(b)   468,906
08/01/37   5.50     2,100,000(b) 2,027,813
08/01/37   6.00     4,500,000(b) 4,457,813
08/01/37   7.00     4,000,000(b) 4,108,752


RIVERSOURCE U.S. GOVERNMENT MORTGAGE FUND

COMMENT: In Note E to "Investments in Securities" indicates investment in
Inverse Floating Rate Securities. Where is the Note disclosure?

RESPONSE: The reference in Note E to Inverse Floating Rate Securities is not a
reference to inverse floating residual interest issued by dealer tender option
bond trusts. Note E from the "Portfolio of Investments" reads as follows:

     Inverse floaters represent securities that pay interest at a rate that
     increases (decreases) in the same magnitude as, or in a multiple of, a
     decline (increase) in the LIBOR (London InterBank Offering Rate) Index.
     Interest rate disclosed is the rate in effect on May 31, 2007. At May 31,
     2007, the value of inverse floaters represented 0.03% of net assets.

     The securities that are referenced to as inverse floaters in this footnote
     in the SOI are variable rate interest only CMOs that reset monthly where
     the coupon rate varies/floats inversely to changes in the LIBOR index.

     It should be noted that these particular securities are not inverse
     floating residual interests issued by dealer tender option bond trusts. The
     Fund did not hold any such instruments for the fiscal year ended May 31,
     2007.

There are other RiverSource Funds that do hold inverse floating residual
interests issued by dealer tender option trusts. For reference purposes, as we
discussed, following is the common shareholder report disclosure used to discuss
these instruments:

     INVERSE FLOATER PROGRAM TRANSACTIONS

     The Fund may enter into transactions in which it transfers to trusts fixed
     rate municipal bonds in exchange for cash and residual interests in the
     trusts' assets and cash flows, which are in the form of inverse floating
     rate securities. The trusts fund the purchases of the municipal bonds by
     issuing



     short-term floating rate notes to third parties. The residual interests
     held by the Fund (inverse floating rate securities) include the right of
     the Fund (1) to cause the holders of the short-term floating rate notes to
     tender their notes at par, and (2) to transfer the municipal bonds from the
     trusts to the Fund, thereby collapsing the trusts. The municipal bonds
     transferred to the trusts remain in the Fund's investments in securities
     and the related short-term floating rate notes are reflected as Fund
     liabilities under the caption "Short-term floating rate notes outstanding"
     in the "Statement of assets and liabilities." The notes issued by the
     trusts have interest rates that are multimodal, which means that they can
     be reset to a new or different mode at the reset date (e.g., mode can be
     daily, weekly, monthly, or a fixed specific date) at the discretion of the
     holder of the inverse floating rate security. The floating rate note
     holders have the option to tender their notes to the trusts for redemption
     at par at each reset date. The bonds held by the trusts serve as collateral
     for the short-term floating rate notes outstanding. Contractual maturities
     and interest rates of the municipal bonds held in trust at Nov. 30, 2007,
     are presented in the "Portfolio of Investments." The inclusion of interest
     and fee expense related to the short-term floating rate notes corresponds
     to an equal increase in interest income from the fixed rate municipal bonds
     held in trust.

We will evaluate our reference to security types in Notes disclosure to reduce
potential confusion.

COMMENT: If there are any "when issued" securities, identify them (audit guide
requirement).

RESPONSE: All "when issued" securities have been identified and disclosed in the
financial statements for the year ended May 31, 2007. See Note No. 1 in the
"Notes to Financial Statements - Summary of Significant Accounting Policies":

     SECURITIES PURCHASED ON A FORWARD-COMMITMENT BASIS

     Delivery and payment for securities that have been purchased by the Fund on
     a forward-commitment basis, including when-issued securities and other
     forward commitments, can take place one month or more after the transaction
     date. During this period, such securities are subject to market
     fluctuations, and they may affect the Fund's net assets the same as owned
     securities. The Fund designates cash or liquid securities at least equal to
     the amount of its forward-commitments. At May 31, 2007, the Fund has
     entered into outstanding when-issued securities of $68,118,650 and other
     forward-commitments of $17,279,683.
     . . . .

See also Note (b) in "Investments in Securities":

     At May 31, 2007, the cost of securities purchased, including interest
     purchased, on a when-issued and/or other forward-commitment basis was
     $85,398,333.

The following specific securities in the "Investments in Securities" have been
referenced to Note (b) (above) indicating those securities that are either
acquired on a when -issue or forward commitment basis:



RIVERSOURCE U.S. GOVERNMENT MORTGAGE FUND
Annual Report for 5/31/07
Securities purchased on a when-issue and/or other forward commitment basis



                     PRINCIPAL                           When       Forward
ISSUER     COUPON      AMOUNT               VALUE      - issued   commitment
------     ------   -----------          -----------   --------   ----------
                                                   
BONDS
ASSET- BACKED
Renaissance Home Equity Loan Trust
Series 2007-2 CI M4
06/25/37    6.31%   $   195,000(b)       $   193,050      x

Renaissance Home Equity Loan Trust
Series 2007-2 CI M5
06/25/37    6.66        130,000(b)           128,700      x

Renaissance Home Equity Loan Trust
Series 2007-2 CI M6
06/25/37    7.01        190,000(b)           188,100      x

MORTGAGE-BACKED
Federal Home Loan Mtge Corp
06/01/37    6.00      4,400,000(b)         4,397,250      x
06/01/37    6.50     20,000,000(b)        20,318,759      x

Federal Home Loan Mtge Corp #1J1621
05/01/37    5.89      3,100,000(b, c)      3,116,723                   x

Federal Home Loan Mtge Corp #C02853
05/01/37    6.50      8,824,872(b)         8,966,659                   x

Federal Natl Mtge Assn
06/01/22    5.00      2,000,000(b)         1,949,376      x
06/01/22    5.50      7,900,000(b)         7,838,284      x
06/01/22    6.00      3,000,000(b)         3,030,000      x
06/01/37    5.00      5,000,000(b)         4,757,810                   x
06/01/37    5.50      8,000,000(b)         7,809,999      x
06/01/37    6.00     17,000,000(b)        16,978,749      x

Federal Natl Mtge Assn #919341
05/01/37    6.50      5,000,000(b)         5,078,772      x


COMMENT: To the extent securities are held as collateral, this should be noted
in "Investments in Securities."

RESPONSE: See Note No. 5 in the "Notes to the Financial Statements" which makes
reference to the securities that have been pledged as collateral to cover
initial margin deposits on the open futures contracts as of May 31, 2007:


     INTEREST RATE FUTURES CONTRACTS

     At May 31, 2007, investments in securities included securities valued at
     $343,466 that were pledged as collateral to cover initial margin deposits
     on 91 open purchase contracts and 125 open sale contracts. The notional
     market value of the open purchase contracts at May 31, 2007 was $9,861,625
     with a net unrealized loss of $9,843. The notional market value of the open
     sale contracts at May 31, 2007 was $22,874,860 with a net unrealized gain
     of $102,390. See "Summary of significant accounting policies" and "Notes to
     investments in securities."

Securities that have been pledged as collateral to cover initial margin on open
futures contracts are specified within the "Investments in Securities" by
reference to Note (h) in the "Notes to Investments in Securities":

     Partially pledged as initial deposit on the following open interest rate
     futures contracts (see Note 5 to the financial statements).

The following specific securities within the May 31, 2007 "Investments in
Securities" have been referenced to the aforementioned Note (h) and are pledged
as collateral at May 31, 2007 on open futures contracts:



                    PRINCIPAL
ISSUER     COUPON     AMOUNT     VALUE
------     ------   ---------   -------
                       
MORTGAGE-BACKED
Federal Natl Mtge Assn #655635
08/01/32    9.50    103,564(h)  114,581

Federal Natl Mtge Assn #655635
08/01/32    6.50    884,291(h)  917,616


In regard to securities that are purchased on a when-issued or forward
commitment basis, the Fund systematically earmarks and designates other liquid
securities held by the Fund of an equivalent market value designated to cover
the when-issue and forward commitment positions. Such positions are
marked-to-market daily in order to ensure that the Fund has sufficiently
designated liquid assets on its internal systems.

While these securities are not specifically footnoted within the "Investments in
Securities", the Fund does make reference to these designations in Note 1 in the
"Notes to Financial Statements":

     SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     SECURITIES PURCHASED ON A FORWARD-COMMITMENT BASIS

     Delivery and payment for securities that have been purchased by the Fund on
     a forward-commitment basis, including when-issued securities and other
     forward commitments, can take place one month or more after the transaction
     date. During this period, such securities are subject to market
     fluctuations, and they may affect the Fund's net assets the same as owned
     securities. The Fund designates cash or liquid securities at least equal to
     the amount of its forward-commitments.
     . . . .



COMMENT: In the "Investments in Securities," there are open future contracts.
Where is the daily variation margin reflected?

RESPONSE: At May 31, 2007, there was a variation margin receivable of $12,140.
This amount is included in the "Statement of Assets and Liabilities" within the
"Receivable for investment securities sold" (the balance of $26,099,478 includes
the $12,140 for variation margin receivable). There was also a variation margin
payable of $2,735. This amount is included in the "Statement of Assets and
Liabilities" within the "Payable for investment securities purchased" (the
balance of $26,031,686 includes the $2,735 for variation margin payable).

Going-forward, we have determined that any receivable or payable for daily
variation margin on futures contracts will be stated separately on the
"Statement of Assets and Liabilities".

COMMENT: Inverse Floaters. Was there interest expense? If so, was such interest
expense accounted for properly?

RESPONSE: There was no interest expense. The securities that are referenced as
inverse floaters in Note E in the "Notes to Financial Statements" and the
"Investments in Securities" are variable rate interest only CMOs that reset
monthly where the rate varies/floats inversely to changes in the LIBOR index.
These securities are not residual interests issued by dealer tender option bond
trusts. Therefore, there is no interest expense to record.

COMMENT: In Note 2 to the "Notes to Financial Statements" it indicates that the
Fund received a one time payment of an "insignificant amount." How was this
treated from an accounting standpoint?

RESPONSE: A cash payment in the amount of $6,038 was made to the Fund from
Ameriprise Financial, Inc. (parent company of the investment manager,
RiverSource Investments, LLC). The Fund accounted for the payment as a realized
capital gain for the year ended May 31, 2007. See reference in Note 2 to the
"Notes to Financial Statements, " "Expenses and Sales Charges" for a one-time
payment to the Fund below:

     In addition, the Fund received a one time payment of $6,038 by Ameriprise
     Financial for additional earnings from overnight cash balances determined
     to be owed for prior years. This amount was insignificant to the Fund's net
     asset value and total return.

Please contact me at your convenience at (612)671-4321 if you have additional
questions or want to discus further.


                                        /s/ Christopher O. Petersen
                                        ----------------------------------------
                                        Christopher O. Petersen, Ameriprise
                                        Financial, Inc., Vice President and
                                        Group Counsel, and RiverSource Funds,
                                        Assistant Secretary