Rocky Mountain Philatelic Exhibition, Inc. & USPS First Day of Issue Ceremony Program for the dedications of Scott #2530 19c Balloon stamp, #C129 40c William T. Piper airmail stamp, #UC63 45c Eagle aerogrammes (two different - one on light blue stock, the other on white) FDOI, May 17, 1991, Denver, Colorado.  All were dedicated in a single ceremony at ROMPEX '91.  The program measures 9" x 5".