PROSPECTUS SUPPLEMENT NO. 1
OFFER TO EXCHANGE
all outstanding
8 3/4% SENIOR SUBORDINATED NOTES DUE 2009
($250,000,000 principal amount outstanding)
for
8 3/4% SENIOR SUBORDINATED NOTES DUE 2009
OF
IRON MOUNTAIN INCORPORATED
The Exchange Offer will expire at
5:00 p.m., New York City time
on January 13, 1998, unless
extended
This Prospectus Supplement No. 1 is to notify holders of 8 3/4% Senior
Subordinated Notes Due 2009 that in the Prospectus dated December 11, 1997 and
the accompanying Letter of Transmittal and Notice of Guaranteed Delivery, all
references to "8 3/4% Senior Notes Due 2009" should read "8 3/4% Senior
Subordinated Notes Due 2009."
Prospectus Supplement No. 1, dated December 22, 1997, to the Prospectus
dated December 11, 1997.
