100
NE Adams
Street
Peoria,
Illinois
61629
May
11,
2006
Dear
Stockholder:
We
have previously
sent to you proxy material for the Annual Meeting of Caterpillar Inc. to
be held
on June 14, 2006. Your
Board
of Directors unanimously recommends that stockholders vote FOR Proposals
1, 2,
3, 4 and 5, and AGAINST Proposals 6, 7 and 8.
Your
vote
is important --
please vote your
proxy TODAY by telephone,
via
the Internet, or
by signing and returning the enclosed proxy card.
(Please
note your
vote and this reminder may have crossed in the mail. If so, we encourage
you to
vote again to ensure representation at the meeting. Your vote will only be
counted once.)
Thank
you for your
cooperation.
Very
truly
yours,
/s/
James B.
Buda
James
B.
Buda
Vice
President,
General Counsel and Secretary
|
IMPORTANT
NOTE:
Remember,
you can vote by telephone or via
the
Internet --
Simply
follow the easy instructions on the enclosed
proxy
or voting instruction card.
If
you have
any questions, or need assistance voting
of
your
shares, please call our proxy solicitor,
INNISFREE
M&A INCORPORATED
TOLL-FREE,
at 1-877-687-1865.
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