Collection of 15 items, each signed by an aerospace pioneer or developer. Signers are: Donald Wills Douglas (2; signature and SP), James Smith McDonnell (magazine cover), Charles S. Draper (signature), Robert E. Gross (signature), Leroy Grumman (signature), Courtlandt S. Gross (signature), Helmut Heinrich (2; signature and TLS), Clarence L. Johnson (3; signature, TLS, and SP, ins), James H. Kindelberger (signature), Bill Leer (signature), and Edwin Link (FDC). In fine condition. RR Auction COA.
