money, they were not disciplined. Slayton reduced the number of medallions each member of Apollo 15 could take along by half. He warned the Apollo 15 crew against carrying any items into space that could make money for them or others. In August 1965, Slayton had issued regulations requiring that items astronauts planned to carry be listed, approved by him, and checked for safety in space if similar items had not already been flown. Each crew member was bound by NASA standards of conduct issued in 1967 forbidding using one's position to make money for oneself or another person. Creation and spaceflight Eiermann was supposed to create the cachet for the special covers he had proposed, but time ran short and Scott did it instead. He used the Apollo 15 mission patch to create the design, and gave it to Collins of the Mission Support Office. Collins arranged with the Brevard Printing Company of Cocoa, Florida for the design to be reproduced on both regular and lightweight envelopes. The company performed the work and billed Alvin B. Bishop Jr. $156 for the lightweight envelopes and $209 for the regular ones. Bishop, a public relations executive who specialized in the aerospace industry, and knew many astronauts, created specially designed covers for a number of the Apollo missions, which he supplied only to the crew and their families. He was at the time employed by Hughes Enterprises in Las Vegas; the company paid the bill. Herrick secured the services of a commercial artist, Vance Johnson, with whom Worden discussed the design, resulting in 100 envelopes depicting the phases of the Moon. Worden listed these covers as part of the contents of his PPK for Slayton's approval, along with 44 first day covers that he owned. Ad-Pro Graphics, Inc. of Miami printed the Herrick envelopes, along with card inserts stating the accompanying cover had been carried on Apollo 15. Herrick paid the firm's bill of $50.50; he also obtained the postage stamps for the covers, and two rubber stamps stating the dates of the launch and splashdown. The design was printed on labels that were affixed to the envelopes. Not all Herrick covers are identical, as different cachets, rubber stamp impressions and combinations of postage stamps were used. Worden also carried a cover postmarked in 1928, autographed by aviation pioneer Orville Wright. In addition to those brought by Scott and by Worden, Irwin