SCHEDULE 14A

                                 (RULE 14a-101)

                     INFORMATION REQUIRED IN PROXY STATEMENT
                            SCHEDULE 14A INFORMATION

           Proxy Statement Pursuant to Section 14(a) of the Securities
                              Exchange Act of 1934

Filed by the Registrant |X|

Filed by a party other than the Registrant |_|


Check the appropriate box:

|_|   Preliminary proxy statement.
|_|   Definitive proxy statement.
|X|   Definitive additional materials.
|_|   Soliciting material under Rule 14a-12.
|_|   Confidential, for use of the Commission only (as permitted by Rule
      14a-6(e)(2)).

                           TRI-CONTINENTAL CORPORATION
                (Name of Registrant as Specified in Its Charter)


--------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of filing fee (check the appropriate box):

|X|   No fee required.

|_|   Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1)   Title of each class of securities to which transaction applies:

(2)   Aggregate number of securities to which transaction applies:

(3)   Per unit price or other underlying value of transaction computed pursuant
      to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is
      calculated and state how it was determined):

(4)   Proposed maximum aggregate value of transaction:

(5)   Total fee paid:

|_|   Fee paid previously with preliminary materials.

|_|   Check box if any part of the fee is offset as provided by Exchange Act
      Rule 0-11(a)(2) and identify the filing for which the offsetting fee was
      paid previously. Identify the previous filing by registration statement
      number, or the form or schedule and the date of its filing.

(1)   Amount Previously Paid:

(2)   Form, Schedule or Registration Statement No.:

(3)   Filing Party:

(4)   Date Filed:




                           Tri-Continental Corporation
                         an investment you can live with

                                                              September 13, 2006

Dear Valued Stockholder:

Tri-Continental Corporation has thrived over the years despite the stock market
crash of 1929, the Great Depression, World War II, social upheavals of the 60s,
and devastating bear markets in the 70s and early 2000s. Today, Tri-Continental
faces a new challenge. We need your help to defeat an attack by a group of hedge
funds. Your vote is critical.

You may have recently received another letter from hedge fund manager Arthur
Lipson containing preposterous allegations of misdeeds at Tri-Continental.
Please don't be fooled. This is a desperate attempt by Mr. Lipson and his hedge
funds and shows the lengths to which they will go to mislead Stockholders in
their efforts to take control of Tri-Continental.

In addition, the letter obscures the significant conflicts, both personal and
financial, of Mr. Lipson and his director nominees (the "Hedge Fund Slate"). By
any measure, the hedge fund nominees are not "truly independent" and, as a
consequence, their interests and your interests are not aligned. Their behavior
suggests that these are not people you can trust to oversee your Corporation:

      o     Mr. Lipson is not Tri-Continental's largest Stockholder. He
            personally owns 901 shares of Tri-Continental. The two other members
            of the Hedge Fund Slate own 100 shares each, which were gifted to
            them in July 2006 by one of Lipson's hedge funds.

      o     Each member of the Hedge Fund Slate is -- first and foremost -- an
            investor in Lipson's hedge funds, which do own a substantial
            position in Tri-Continental.

      o     The hedge funds' positions in Tri-Continental are hedged;
            accordingly, Tri-Continental investment results are of little
            consequence to them.

      o     How can one realistically expect the Hedge Fund Slate to put the
            interests of long-term Stockholders ahead of the interests of
            Lipson's hedge funds?

Outlined below are matters relating to your investment that we believe are
particularly important for your consideration:

      o     Tri-Continental expects to resume capital gains payments no later
            than 2007, barring adverse market conditions. Due to substantial
            gains realized by the Corporation's portfolio since 2003 (see chart
            on next page), the tax loss carry-forward has been reduced to only
            $.74 a share. This means that we have less than $1 of losses to
            offset before we can start paying out gains again.

      o     Tri-Continental's recent performance has been highly respectable. As
            of September 12, 2006 Market Price and NAV total return exceeds the
            S&P 500 year-to-date and for the one- and three-year periods (see
            chart on next page).

      o     The mutual fund inquiry referred to by the hedge fund group does not
            in any way relate to Tri-Continental, and was fully disclosed to you
            nearly three years ago in a letter and in each Annual and
            Semi-Annual Report since December 31, 2003.



Call us old fashioned, but we think it's important to keep the Tri-Continental
tradition of prudent wealth-building alive to serve the long-term needs of
current Stockholders and future generations. It's a shame that in today's
financial marketplace a cottage industry has emerged where hedge fund
speculators search out and destroy closed-end investment companies in order to
turn a quick profit.

Please support Tri-Continental by completing and signing the enclosed WHITE
proxy card. Remember, if you voted a GOLD card in support of Lipson's hedge
funds, and wish to change that vote, you can do so by completing and signing the
enclosed WHITE card. Returning the WHITE card is a vote against the destructive
practices of hedge funds and a vote for continued improvement in investment
results and for eminent board members who seek to strengthen, not radically
alter, your Corporation.

Again, if you already voted with the hedge funds, please change your vote by
returning the WHITE card.

Sincerely,

/s/ William C. Morris                       /s/ Brian T. Zino

William C. Morris                           Brian T. Zino
Chairman                                    President

P.S. If you have any questions or need assistance in voting your shares, please
call Georgeson toll-free at 888-219-8293. Banks and brokerage firms, please call
212-440-9800.

--------------------------------------------------------------------------------

                             REALIZED CAPITAL GAINS

                                         2004           2005      2006(8 months)
--------------------------------------------------------------------------------
Realized Capital Gains                  $1.79          $2.23          $1.87

            INVESTMENT PERFORMANCE CONTINUES TO BE HIGHLY RESPECTABLE

                     Return          Average Annual Returns    Cumulative Return
                  Year-to-Date      1 year          3 years        3 years
--------------------------------------------------------------------------------
Market Price          10.1%          11.2%           11.3%          37.7%
NAV                    7.1%           8.5%           10.9%          36.3%
S&P 500                6.6%           7.9%           10.8%          36.1%

All performance data as of September 12, 2006.

--------------------------------------------------------------------------------