In 1971 after forming the new group, Peninsula Chapter – Society of Israel Philatelists, Edward Rosen began running PIPEX, Peninsula Israeli Philatelic Exhibition. The one-day show ran annually through to 1974.
The Sequoia Stamp Club had been meeting in the Redwood City Community Activity Building (CAB) since January 1967, but had not been part of a stamp show since 1965. So it made perfect sense to join PIPEX in hosting the first PENPEX-PIPEX show at the CAB on December 6-7, 1975.
Ed Rosen chaired the show with local dealer, Charmion G. Woolfe, with help from Bror E. Youngstrom who served as vice-chair. Volunteers came from the Peninsula Chapter – Society of Israel Philatelists and Sequoia Stamp Club. Committee members were Lou Dombro; Landry (Dusty) Doster, frames and food sales; Kurt A. Hasten, miscellaneous; Gary Luxton, prizes and judges; Ilona Olsen, hospitality; Stuart J. Phillips, security; Edward G. Rosen, co-chair and raffle prizes; Charmion Woolfe, co-chair; and Bror Youngstrom, exhibits.
The main hall was filled with 60 exhibit frames of 12 pages each. The entry fee was $1.50 per frame. The exhibit judges were Cy Thompson, James E. Jefferson, and apprentice Dr. Leopold Dickstein, a holyland specialist.