Law Offices of CHAPMAN AND CUTLER LLP 111 West Monroe Street, Chicago, Illinois 60603-4080 FAX (312) 701-2361 Telephone (312) 845-3000 chapman.com Theodore S. Chapman San Francisco 1877-1943 Henry E. Cutler 595 Market Street 1879-1959 San Francisco, CA 94105 (415) 541-0500 Salt Lake City 50 South Main Street Salt Lake City, Utah 84144 (801) 533-0066 January 7, 2005 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549-1004 Attn: Filing Desk, Stop 1-4 Re: Advisor's Disciplined Trust 26 (the "Fund") (CIK 1301306) ------------------------------------------- Ladies/Gentlemen: Transmitted herewith on behalf of Fixed Income Securities, L.P., depositor and principal underwriter of the Fund, is a Registration Statement on Form S-6 for the registration under the Securities Act of 1933 of units representing the ownership of interests in the Fund. We currently anticipate that the registration statement for the Fund will not contain disclosures which would render it ineligible to become effective pursuant to Rule 487 under the Securities Act of 1933. No notification of registration or registration statement under the Investment Company Act of 1940 is currently being submitted to the Commission, as the filings under Investment Company Act File No. 811-21056 for Advisor's Disciplined Trust are intended to be applicable to this series of the Fund. Inasmuch as the Fund is not yet operative, no filings have been required under any of the acts administered by the Commission. Therefore, for purposes of Securities Act Release No. 5196 there are no delinquencies to be reported or other references to be made to filings under the 1934 Act. If you have any questions, please do not hesitate to contact Scott R. Anderson at (312) 845-3834 or the undersigned at (312) 845-3787. Very truly yours, CHAPMAN AND CUTLER LLP By /s/ MARK J. KNEEDY ---------------------------- Mark J. Kneedy - 2 -