Fact sheet, one page, 7.75 x 10.5, signed in black felt tip by pilots Bruce Peterson and Don Sorlie, and two other officials. In fine condition. The sheet commemorates the 40th anniversary of the first NASA M2-F1 ‘lifting body’ aircraft. part of a research program into aerodynamic shapes that would be suitable for vehicles returning to Earth from space. This research would eventually culminate in the space shuttle. . Pre-certified Scott Cornish and RR Auction COA.