xhibit 99 (a)

                   BOK FINANCIAL CONTINUES REGIONAL EXPANSION
                  Fort Worth and Denver Acquisitions Completed


TULSA,  Okla.  (Tuesday,  July 17, 2007) - BOK  Financial  Corporation  reported
earnings of $53.9 million or $0.80 per diluted  share for the second  quarter of
2007,  compared  with net income of $55.0 million or $0.82 per diluted share for
the second quarter of 2006.

Highlights of the quarter included:

     o    Acquisitions  of  Worth  National  Bank and  First  United  Bank  were
          completed  during the quarter.  Worth added net loans of $281 million,
          total  deposits of $369  million and five  banking  locations  in Fort
          Worth,  Texas.  First  United  added net loans of $94  million,  total
          deposits of $133 million and eleven  banking  locations in the Denver,
          Colorado area.

     o    Net interest revenue grew $13.8 million or 11% over the second quarter
          of 2006 and $6.1 million or 16%  annualized  over the first quarter of
          2007, excluding the impact of acquisitions.

     o    Average  outstanding  loans totaled $11.3 billion,  up $1.9 billion or
          20% over the second quarter of 2006;  average  deposits  totaled $12.4
          billion, up $1.2 billion or 10% over the second quarter of 2006.

     o    Net interest  margin was 3.31% for the second  quarter of 2007,  3.32%
          for the first  quarter  of 2007 and 3.40% for the  second  quarter  of
          2006.

     o    Provision for credit losses was $7.8 million for the second quarter of
          2007,   up  from  $3.8  million  for  the  second   quarter  of  2006.
          Non-performing assets totaled $60 million or .52% of outstanding loans
          at June 30, 2007 and $39 million or .40% of outstanding  loans at June
          30,  2006.  Non-performing  assets  totaled  $50.7  million or .44% of
          outstanding loans at June 30, 2007 excluding acquisitions.

     o    Fees and  commissions  revenue  increased  $4.9 million or 5% over the
          second quarter of 2006.

     o    Operating  expenses,  excluding  changes in the fair value of mortgage
          servicing  rights increased $15.3 million or 12%;  personnel  expenses
          grew $9.5 million or 13% over the second quarter of 2006.

     o    Debt rating was placed on positive outlook by Standard & Poors.

"Acquisitions  completed  during the second quarter  significantly  expanded our
presence  in the Fort Worth and Denver  markets,"  said  President  and CEO Stan
Lybarger.  "Worth  increased our team of experienced  bankers in Tarrant County,
Texas.  First  United added eleven  banking  locations to our branch  network in
Denver, which almost triples our branch network in that market."

Net Interest Revenue

Net interest  revenue  totaled $134.9 million for the second quarter of 2007, up
$13.8  million  or 11% over the second  quarter of 2006 and $6.1  million or 16%
annualized over the first quarter of 2007. Average earning assets increased $2.2
billion or 15%, including a $1.9 billion increase in average  outstanding loans.
Compared with the previous quarter,  average earning assets were up $699 million
or 17%  annualized,  including  a $445  million or 16%  annualized  increase  in
average outstanding loans.

Average deposits were up $1.2 billion or 10% over the second quarter of 2006 and
$314  million  or 10%  annualized  over  the  first  quarter  of  2007.  Average
interest-bearing transaction accounts grew $1.1 billion compared with the second
quarter of 2006 and $314 million compared with the first quarter of 2007.

Net interest margin was 3.31% for the second quarter of 2007 compared with 3.40%
for the second  quarter of 2006 and 3.32% for the first quarter of 2007.  Yields
on average  earning  assets  increased  29 basis points to 7.00% and the cost of
interest-bearing  liabilities  increased 39 basis points to 4.12%  compared with
the second  quarter of 2006.  Yields on average  earning  assets and the cost of
interest-bearing  liabilities  both  decreased 2 basis points  compared with the
first quarter of 2007.


Loans and Deposits

Outstanding  loans totaled $11.7 billion at June 30, 2007, up $556 million since
March 31,  2007.  Loans  grew at a 6%  annualized  rate  since  March 31,  2007,
excluding  $378 million of loans  acquired  with Worth  National  Bank and First
United  Bank.  Commercial  loans  increased  $38  million or 2% and  residential
mortgage  loans grew $43  million or 13%.  Outstanding  consumer  loans grew $59
million or 31% due largely to indirect automobile lending.

Commercial and commercial  real estate loan balances were reduced by significant
payoffs of energy, healthcare and real estate loans during the second quarter of
2007. The June 30, 2007 pipeline of new lending opportunities remains strong.

"Although  commercial  loan growth  slowed from an almost 20% annual pace during
the second  quarter,  we expect the overall rate of loan growth to increase from
second quarter levels," said Lybarger.

Outstanding  loans grew $117 million or 8%  annualized  in the  Oklahoma  market
during the second quarter of 2007. Growth in the Oklahoma market was centered in
consumer and residential mortgage loans. Loans grew at a combined annual rate of
5% in the regional  markets.  Annualized  loan growth,  excluding  acquisitions,
during the second  quarter of 2007 was 10% in Arizona,  4% in Colorado and 3% in
Texas.

Total deposits increased $954 million during the second quarter to $13.2 billion
at June 30, 2007. Excluding acquisitions, deposits increased $451 million or 15%
annualized since March 31, 2007. Time deposits and interest-bearing  transaction
accounts each increased  during the second quarter while demand deposit  account
balances declined. Excluding acquisitions,  deposits grew by annualized rates of
14% in Texas, 13% in Oklahoma,  21% in New Mexico and 23% in Colorado during the
second quarter of 2007.


Credit Quality

Net loans  charged-off  during the second  quarter of 2007 totaled $5.8 million,
compared  with $3.1  million in the  previous  quarter  and $3.8  million in the
second  quarter of 2006.  Net  charge-offs  were  dispersed  among our operating
regions and by industries.  Non-performing assets totaled $60 million or .52% of
outstanding  loans at June 30, 2007,  compared with $41 million or .37% at March
31, 2007 and $39 million or .40% at June 30, 2006. Non-performing assets at June
30, 2007 included $6.9 million of non-accruing  loans acquired with First United
Bank.  The  Company  will be  reimbursed  by the sellers for up to $8 million of
losses  incurred  on any  acquired  loans in the  three-year  period  after  the
acquisition date. Excluding acquisitions,  non-performing assets increased $10.0
million due  primarily  to three loans  identified  as  non-accruing  during the
quarter.  These  credits  were not  concentrated  in any one segment of the loan
portfolio or geographic region.

"Non-performing  assets  increased from  abnormally low levels in 2005 and 2006,
though they remain lower than the levels we will see over a full credit  cycle,"
said Lybarger.

The combined  allowance for loan losses and reserve for off-balance sheet credit
losses  totaled  $139  million  or  1.20%  of  outstanding  loans  and  268%  of
non-accruing  loans at June 30,  2007.  The  allowance  for loan losses was $120
million and the reserve for off-balance sheet credit losses was $19 million.  At
March  31,  2007,  the  combined  allowance  for loan  losses  and  reserve  for
off-balance  sheet credit  losses  totaled $134 million or 1.21% of  outstanding
loans and 427% of  non-accruing  loans.  The  allowance for loan losses was $114
million and the reserve for off-balance sheet credit losses was $20 million.

The provision for credit losses for the second quarter of 2007 was $7.8 million,
compared  with $6.5  million for the first  quarter of 2007 and $3.8 million for
the second quarter of 2006.


Fees and Commissions Revenue

Fees and  commissions  revenue  totaled $98.8 million for the second  quarter of
2007,  up $4.9  million  or 5% over the same  period of 2006.  Transaction  card
revenue  increased  $3.0 million or 15% due to growth in both ATM fees and debit
card  revenue.  Trust  revenue  was up $1.7  million or 10% due to growth in the
value of trust assets  managed.  Revenue from  investments  in  bank-owned  life
insurance increased $2.5 million.  Other revenue decreased $2.9 million due to a
$2.7 million  reduction in fees earned on margin asset balances.  Average margin
asset balances for the second  quarter of 2007  decreased $164 million  compared
with the same  period of 2006.  The  decrease  in margin  asset fee  revenue was
offset by an increase in net interest  revenue due to lower costs to fund margin
assets.


Operating Expenses

Operating  expenses,  excluding changes in the fair value of mortgage  servicing
rights,  totaled $141.0 million, up $15.3 million or 12% over the second quarter
of 2006.

Personnel expense totaled $81.9 million,  up $9.5 million or 13% over the second
quarter of 2006.  Salaries and wages  increased $6.8 million or 15% due to an 8%
growth in the number of employees  and a 7% growth in average  compensation  per
employee.  During the second half of 2006, the Company  increased  employment of
experienced  bankers in each of the  regional  markets and made  investments  in
additional  operational and support staff.  Incentive  compensation and employee
benefit  expenses  were  up  $1.3  million  or  8%  and  $1.4  million  or  12%,
respectively.

Data  processing  and  communications  expenses  were up $2.2 million or 14% due
largely  to growth in the volume of  bankcard  transactions.  Professional  fees
included  costs  related to  acquisitions  and the  issuance of $250  million of
subordinated  debt  during  the  second  quarter  of 2007.  All other  operating
expenses grew 6% over the second quarter of 2006.



About BOK Financial Corporation

BOK Financial is a regional financial services company that provides  commercial
and consumer banking,  investment and trust services,  mortgage  origination and
servicing,  and an electronic funds transfer  network.  Holdings include Bank of
Albuquerque,  N.A.,  Bank of Arizona,  N.A.,  Bank of  Arkansas,  N.A.,  Bank of
Oklahoma,  N.A., Bank of Texas, N.A., Colorado State Bank & Trust, N.A., Bank of
Kansas City, N.A., BOSC, Inc., the TransFund electronic funds network, Southwest
Trust Company, N.A. and AXIA Investment Management, Inc. Shares of BOK Financial
are traded on the NASDAQ  under the symbol  BOKF.  For more  information,  visit
www.bokf.com.


This  news  release  contains  forward-looking  statements  that  are  based  on
management's  beliefs,   assumptions,   current   expectations,   estimates  and
projections about BOK Financial, the financial services industry and the economy
generally.  Words such as  "anticipates,"  "believes,"  "estimates,"  "expects,"
"forecasts,"   "plans,"  "projects,"   variations  of  such  words  and  similar
expressions are intended to identify such forward-looking statements. Management
judgments  relating to and  discussion of the provision and allowance for credit
losses involve judgments as to future events and are inherently  forward-looking
statements.  Assessments  that BOK  Financial's  acquisitions  and other  growth
endeavors  will be  profitable  are  necessary  statements  of  belief as to the
outcome of future events based in part on  information  provided by others which
BOK  Financial  has  not  independently  verified.   These  statements  are  not
guarantees of future performance and involve certain risks,  uncertainties,  and
assumptions  which are  difficult  to predict  with  regard to  timing,  extent,
likelihood and degree of occurrence.  Therefore, actual results and outcomes may
materially  differ  from  what  is  expected,  implied  or  forecasted  in  such
forward-looking statements.  Internal and external factors that might cause such
a difference  include,  but are not limited to (1) the ability to fully  realize
expected  cost  savings from mergers  within the expected  time frames,  (2) the
ability of other  companies on which BOK  Financial  relies to provide goods and
services in a timely and  accurate  manner,  (3)  changes in interest  rates and
interest  rate  relationships,  (4) demand for  products and  services,  (5) the
degree of competition by traditional and nontraditional competitors, (6) changes
in banking regulations, tax laws, prices, levies and assessments, (7) the impact
of technological  advances and (8) trends in consumer  behavior as well as their
ability to repay loans. BOK Financial and its affiliates undertake no obligation
to update, amend or clarify forward-looking  statements,  whether as a result of
new information, future events, or otherwise.