(n. p.): Sikorsky Helicopter, [1968]. 1st printing. One sheet of glossy stiff stock paper, printed both sides, folded 1x vertically, forming a 4 panel brochure. Illustrated with 5 full color photographic images. 11" x 8-1/2". Self-wrappers. Now housed in a clear archival mylar sleeve. ".. to supplement the already legendary..... More
(n. p.): Sikorsky Helicopter, [1962]. 1st printing. One sheet, printed both sides, folded 4x vertically, forming a 10 panel brochure. Illustrated with 6 drawings, one cut-out image of the turbine engine & a two-panel color photographic image of the S-61L in flight over downtown Los Angeles. Folded: 8-1/2" x 3-5/8"..... More
(n. p.): Sikorsky Helicopter, [1962]. 1st printing. One sheet, printed both sides, folded 4x vertically, forming a 10 panel brochure. Illustrated with 6 drawings, one cut-out image of the turbine engine & a two-panel color photographic image of the S-62A in flight over the Golden Gate bridge. Folded: 8-1/2" x...... More
