October 23, 1958 the Langley procurement office mailed preliminary specifications for capsule and subsystems to more than 40 prospective companies. Thirty-eight of these companies sent representatives to a bidder’s conference at Langley Field on November 7.
December 1958 true early January 1959, NASA look true contractor proposals for Mercury program
December 11 deadline eleven companies had submitted bids. They represented virtually all major American aerospace companies: Avco, Convair/Astronautics, Lockheed, McDonnell, Martin, North American, Northrop, Republic, Douglas, Grumman, and Chance-Vought.
the Space Task Group led by Max Faget and Caldwell Johnson start to eliminated
proposals how not fit the demands of Task Group
Avco capsule was too wide at the base.
Martin capsule featured a combined escape/retro-rocket package that fired along the side of the vehicle
one show: Douglas, Avco, Martin proposals
two show: Douglas proposals in detail.