8.05.1162

Blue Print

1935

E. F. Johnson Company Blue Print. Material: paper. Size: 18" x 23 1/2". Description: blue paper; white print: "First made for 10 WATT Aircraft Trans., traced 6-4-35, Westinghouse Elec. & Mfg. Co., Chicopee Falls, Mass., Condenser plate grade aluminum, buy from Aluminum Co. of America"; Third Angle Projection.

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