Free Download Richard Sanders Allen - The Northrop Story 1929-1939
Orion Books | 1990 | ISBN: 051756677X | English | 200 pages | PDF | 162.06 MB
Covers the beginnings, the flying wing of 1929, the model Alphas , racing, planes for Spain, the flying wing of 1939. A heavily illustrated work for collections in aviation history and for the buffs.