Technical Manual Airplane Hydraulic Systems and Miscellaneous Equipment, October 20, 1941 (War Department TM 1-411); Plus Supplement No. 1
Washington, D.C. War Department, 1941. Soft Cover.
Ink name on front wrapper of both volumes, page ridges lightly foxed on "Technical Manual Airplane Hydraulic Systems and Miscellaneous Equipment, October 20, 1941."
106; 12 pp. 2 volume set. CONTENTS: Hydraulic Principles; Hydraulic System Units; Airplane Hydraulic Systems; Inspection of Hydraulic Systems;.....