Boyne, W.Vertical Flight The Age of the Helicopter Smithsonian 1984 087474279X / 9780874742794 Later Printing Paperback Very Good+ with No dust jacket as issued A crisp clean tighty copy appearing unread and showing barely a trace of shelf wear ; 10 X 8.50 X 0.75 inches; 257 pages
Spenser, Jay P.Vertical Challenge. The Hiller Aircraft Story University of Washington Press 1992 0295972033 / 9780295972039 First Edition Hardcover Very Good in Very Good dust jacket An clean tight copy with dampness stains from red endpapers, and dampness wrinkles/waviness. Pages ARE NOT stuck together. Other thank these defects this is a solid clean copy.