Vintage IBM manual & advertising for punch card machine, mid century office

Early 1950s IBM manual and advertising for an electric punch card programmable accounting machine. The manual is for a type 407 and is dated 1953. It has about 210 pages with schematics, diagrams, and illustrations.

We're also including several pieces of original IBM punch card accounting machine advertising for their IBM series 50 machines. The machines look similar in the photos and we're guessing that this was the machine that replaced the 407 in the office.