Autograph Note Signed.
Auto safety pioneer long before Ralph Nader popularized the topic in "Unsafe at Any Speed," this University of Minnesota mechanical engineering professor (1931-63) patented the first retractable safety seat belt in 1963 and the "black box" flight recorder in 1960; he also improved hydraulic bumpers, dashboards and collapsible steering columns. ANS, 1p, heavy stock 6¼" X 3¼", n.p., 1971 July 23. Near fine. Penned boldly in blue ballpoint. Nice note thanking an admirer and "enclosing the last publication before retirement." Closes off with a true crusader's salutation: "Please carry the program forward." A quite uncommon autograph. Item #24444
See all items in Autographs, Science & Medicine
See all items by James J. "Crash" RYAN