.
                                                                               .
                                                                               .

                                                  (RIVERSOURCE INVESTMENTS LOGO)

                   PROSPECTUS SUPPLEMENT DATED JUNE 1, 2007*

                                                                                              
FUND NAME                                                  PROSPECTUS DATE                          FORM NUMBER
RiverSource(R) California Tax-Exempt Fund                  Feb. 28, 2007                            S-6328-99 AE
RiverSource Massachusetts Tax-Exempt Fund                  Feb. 28, 2007                            S-6328-99 AE
RiverSource Michigan Tax-Exempt Fund                       Feb. 28, 2007                            S-6328-99 AE
RiverSource Minnesota Tax-Exempt Fund                      Feb. 28, 2007                            S-6328-99 AE
RiverSource New York Tax-Exempt Fund                       Feb. 28, 2007                            S-6328-99 AE
RiverSource Ohio Tax-Exempt Fund                           Feb. 28, 2007                            S-6328-99 AE
RiverSource Tax-Exempt Bond Fund                           Jan. 29, 2007                            S-6310-99 AD
RiverSource Tax-Exempt High Income Fund                    Jan. 29, 2007                            S-6430-99 AD



The following language has been added at the end of the Principal Investment
Strategies sections of the RiverSource California Tax-Exempt Fund, RiverSource
Massachusetts Tax-Exempt Fund, RiverSource Michigan Tax-Exempt Fund, RiverSource
Minnesota Tax-Exempt Fund, RiverSource New York Tax-Exempt Fund, RiverSource
Ohio Tax-Exempt Fund, RiverSource Tax-Exempt Bond Fund and RiverSource
Tax-Exempt High Income Fund prospectuses:

The investment manager may use derivatives such as futures, options, forward
contracts and swaps, including credit default swaps, structured notes, including
inverse floaters, in an effort to produce incremental earnings, to hedge
existing positions, to increase market exposure and investment flexibility, or
to obtain or reduce credit exposure.

The rest of the section remains unchanged.

In the Principal Risks sections of the RiverSource California Tax-Exempt Fund,
RiverSource Massachusetts Tax-Exempt Fund, RiverSource Michigan Tax-Exempt Fund,
RiverSource Minnesota Tax-Exempt Fund, RiverSource New York Tax-Exempt Fund,
RiverSource Ohio Tax-Exempt Fund, RiverSource Tax-Exempt Bond Fund and
RiverSource Tax-Exempt High Income Fund the following risk has been added:

DERIVATIVES RISK.  Derivatives are financial instruments that have a value which
depends upon, or is derived from, the value of something else, such as one or
more underlying securities, pools of securities, options, futures, indexes or
currencies. Gains or losses involving derivative instruments may be substantial,
because a relatively small price movement in the underlying security(ies),
instrument, currency or index may result in a substantial gain or loss for the
Fund. Derivative instruments in which the Fund invests will typically increase
the Fund's exposure to Principal Risks to which it is otherwise exposed, and may
expose the Fund to additional risks, including counterparty credit risk,
leverage risk, hedging risk, correlation risk and liquidity risk. Counterparty
credit risk is the risk that a counterparty to the derivative instrument becomes
bankrupt or otherwise fails to perform its obligations due to financial
difficulties, and the Fund may obtain no recovery of its investment or may only
obtain a limited recovery, and any recovery may be delayed. Hedging risk is the
risk that derivative instruments used to hedge against an opposite position, may
offset losses, but they may also offset gains. Correlation risk is related to
hedging risk and is the risk that there may be an incomplete correlation between
the hedge and the opposite position, which may result in increased or
unanticipated losses. Liquidity risk is the risk that the derivative instrument
may be difficult or impossible to sell or terminate, which may cause the Fund to
be in a position to do something the investment manager would not otherwise
choose, including, accepting a lower price for the derivative instrument,
selling other investments or foregoing another, more appealing investment
opportunity. Leverage risk is the risk that losses from the derivative
instrument may be greater than the amount invested in the derivative instrument.
Certain derivatives have the potential for unlimited losses, regardless of the
size of the initial investment. See the SAI for more information on derivative
instruments and related risks.

- --------------------------------------------------------------------------------
S-6328-1 A (6/07)

*Valid until next prospectus update