Inside Out Library · ExploreContribution to the technique of landing large airships. Part I (1929)NASA Technical Reports Server (NTRS) · leaf 43N.A.C.A. Technical Memorandum No.51? Figs.20,21,23,24 & 25NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Contribution to the technique of landing large airships. Part IMore like this