Inside Out Library · Explore
Data on the Design of Plywood for Aircraft (1921)
NASA Technical Reports Server (NTRS) · leaf 5
FIG. 1.—COLUMN-BENDING TEST.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
More pictures from Data on the Design of Plywood for Aircraft
More like this