As one of the many pranks pulled during the friendly rivalry between the all-Navy prime crew and the all-Air Force backup crew, the Apollo 12 backup crew managed to insert into the astronauts’ lunar checklist (attached to the wrists of Conrad’s and Bean’s space suits) reduced-sized pictures of Playboy Playmates, surprising Conrad and Bean when they looked through the checklist flip-book during their first EVA. The Apollo Lunar Surface Journal website contains a PDF file with the photocopies of their cuff checklists showing these photos. Appearing in Conrad’s checklist were Angela Dorian, Miss September 1967 (with the caption “SEEN ANY INTERESTING HILLS & VALLEYS ?”) and Reagan Wilson, Miss October 1967 (“PREFERRED TETHER PARTNER,” referring to a special procedure that would require the sharing of life support resources). The photos in Bean’s cuff checklist were of Cynthia Myers, Miss December 1968 (“DON’T FORGET – DESCRIBE THE PROTUBERANCES”) and Leslie Bianchini, Miss January 1969 (“SURVEY – HER ACTIVITY,” in pun of Surveyor). The backup crew who did this later flew to the Moon themselves on Apollo 15. At the back of Conrad’s checklist they had also prepared two pages of complex geological terminology, added as a joke to give him the option to sound to Mission Control like he was as skilled as a professional career geologist. The third crewmember orbiting the Moon was not left out of the Playboy prank, as a November 1969 calendar featuring DeDe Lind, Miss August 1967, had been stowed in a locker that Dick Gordon found while his crewmates were on the lunar surface. In 2011, he put this calendar up for auction. Its value was estimated by RR Auction at US$12,000–15,000. While the Command Module Pilot calendar was in full color, the lunar checklists carried black & white photocopies (although these were dramatized in From the Earth to the Moon as full color photos in the checklists).