1940-1945 Lycoming Opposed Engines Overhaul Manual, 235, 290, 435 Series

UPS Apollo SL10 Audio Panel install & ops manual

Sikorsky S-55 Training Familiarization Booklet by FAA

Lyc GO-480 Hi Compression, Rear Mounted & Crosswise Accessory Parts Manual.

Continental O-470-13, O-470-13A, O-470-4 Engine Parts Catalog

Apollo MX20 Multi-Function Display Install Manual

Sikorsky S-62 Training Familiarization Booklet by FAA

Vertol Boeing 107-II Training Familiarization Booklet by FAA