Apollo 11 insignia. At Scheer's suggestion, the CM was named "Columbia" after "Columbiad", the giant cannon that launched a spacecraft (also from Florida) in Jules Verne's 1865 novel "From the Earth to the Moon". It also referenced Columbia, a historical name of the United States. The astronaut had personal preference kits (PPKs), small bags containing personal items of significance that they wanted to take with them on the mission. Five PPKs were carried on Apollo 11: three (one for each astronaut) were stowed on "Columbia" before launch, and two on "Eagle". Neil Armstrong's LM PPK contained a piece of wood from the
Apollo 11 lunar sample display it was a gift to them. The message explained that the Moon soil material came from the Apollo 11 mission and that their flag was carried to the Moon and back on the first manned mission. It later was discovered that Venezuela's was not flown to the Moon. This was corrected by each of the nation's flags being carried on Apollo 12 and wording changed that their flag "was carried to the Moon and back" without specifying on which Apollo mission. The messages at the bottom of the wooden podium plaque display read: If the wooded display went to a