Maynard, Massachusetts: Digital Equipment Corporation 1967. 494, pages. 8 x 5 1/4 inches. Publisher's pictorial wrappers. Paper browned as normal (heavily on first and last few pages), spine probably reglued in the past. Reading crease on the front wrapper near spine. Some spotting and fading to the covers with previous owner's initials penciled on front wrapper. Good. Wraps. 
A very early guide to Small Computers at Digital Equipment Corporation, marked C-800 on the spine. Contents include: Small Computer Primer, Application Program Examples, Family-of-eight Users Handbooks (PDP-8, 8/S, LINC-8), Product Catalog.
Digital was a major player in the early days of small computers and this book provides very detailed guidance for the technical user including flow charts, code, circuit diagrams and other items. It is early enough that much of the contents are alien to the modern programmer. The last section, the product catalog, includes images of and short descriptions of the various platforms DEC offered at the time.