Inside Out Library · ExploreThe problem of liquid fuels (for aircraft engines) (1924)NASA Technical Reports Server (NTRS) · leaf 12il.A.C.A. Technical Memdrandum Ho. 270NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from The problem of liquid fuels (for aircraft engines)More like this