Editing Apollo 11 (section)

=== Call signs ===
[[File:NASM-NASM2013-02663.jpg|thumb|Original cockpit of the command module (CM) with three seats, photographed from above. It is located in the [[National Air and Space Museum]], the very high resolution image was produced in 2007 by the [[Smithsonian Institution]].]]
After the crew of Apollo 10 named their spacecraft ''Charlie Brown'' and ''Snoopy'', assistant manager for public affairs [[Julian Scheer]] wrote to [[George Low]], the Manager of the Apollo Spacecraft Program Office at the MSC, to suggest the Apollo 11 crew be less flippant in naming their craft. The name ''Snowcone'' was used for the CM and ''Haystack'' was used for the LM in both internal and external communications during early mission planning.{{sfn|Marshall Space Flight Center|1969|p=8}}

The LM was named ''[[Lunar Module Eagle|Eagle]]'' after the motif which was featured prominently on the mission insignia. At Scheer's suggestion, the CM was named ''[[Command module Columbia|Columbia]]'' after ''[[Columbiad#In fiction|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 referred to [[Columbia (name)|Columbia]], a historical name of the United States.{{sfn|Collins|2001|pp=334–335}}{{sfn|Brooks|Grimwood|Swenson|1979|p=331}} In Collins' 1976 book, he said ''Columbia'' was in reference to [[Christopher Columbus]].{{sfn|Collins|1994|p=116}}