Color first edition of the STS 51-L Mission Chart, 40.75 x 15.5, scale 1:40,000,000, dated September 1985, showing the orbit groundtrack data for the mission's first 96 revolutions. Lithographed by DMAAC 11-85, and prepared and published by the Defense Mapping Agency Aerospace Center. In fine, folded condition. An uncommon mission chart for the tragic final flight of the Space Shuttle Challenger.
