Principles of electricity applied to telephone and telegraph work; a training course text prepared for employees of the Long lines department, American telephone and telegraph company, November, 1938...

""

General review of operating results of the Bell system and its principal functional divisions for the years 1936 and 1937, and certain prior years, and detailed comparision of operating results of Long lines department for the years 1936 and 1937, June 1, 1938.

Reproduced from type-written copy.

Telephone system construction contract : labor & materials.

"REA form 511, Rev. 10-73."