Inside Out Library · ExploreFull Scale Investigation of the Drag of a Wing Radiator (1929)NASA Technical Reports Server (NTRS) · leaf 6Figs. l,Z,i,5. S.A.C.A. Technical Note Nc.318NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Full Scale Investigation of the Drag of a Wing RadiatorMore like this
