New York, NY: Bell Telephone Laboratories, Incorporated 1949. Later printing. 1-12 pages. 11 x 8 1/2 inches. Publisher's printed grey, blue and black wrappers, stapled at the spine. Five holes punched at the spine as issued. Penciled "1947" and "p8" on the front wrapper. Near Fine. Wraps.

“In 1948..... More