The 026 Key-Punch Machine.
The IBM Accounting Principle.
The workhorse of American Business in the Fifties!
The IBM 402 Accounting Machine.
A 402 control panel with sample wiring.
This could be attached to 402 accounting
machines to punch summary cards in order
to reduce card volume.
It could also be used stand-alone
to reproduce decks of cards, etc.
Like the 402 and all other machines,
it had a control panel.
IBM 077 Collator.
This machine was used to merge two
decks of cards. For example, to
merge an employee master card
in front of time-cards.