Physical description

Set of four Black and White photographs of the MMTB accounting systems using Powers Tabulator machines used to punch cards and provide information for the MMTB Management systems and reports.



See: https://en.wikipedia.org/wiki/Powers-Samas - which also became eventually part of Unisys.



.1 -photos of the room where the cards were punched - 10 ladies at work.



.2 - Photo of the actual equipment in use - note the Powers floor mat.



.3 - Another part of the machine with many cards.



.4 - Close up of two of the machines.