Haunting series of 41 photographs, each measuring 8'' x 10'', from the Apollo 1 fire investigation. Lot includes an internal letter from North American Aviation, Inc. to ''ALL SUPERVISION'' giving a preliminary analysis of probable causes for the disaster. Also included is an ''Apollogram'' memorandum that gives the text of North American Aviation, Inc. Vice President and Apollo Program Manager Dale D. Myers' statement delivered to the House Subcommittee on NASA Oversight on 27 January 1967. With official information on verso of each photo. Very good condition.