New York: Bell Telephone Laboratories, Inc. October 1950. First Separate Edition. 1-7, [1-blank] pages. 21.3 x 27.5 cm (8 3/8 x 10 7/8 inches). Stapled wrappers, printed in grey, light blue, and black. 5 hole punched at the spine, as issued. The first separate edition. A bright clean copy. Fine..... More