Punch Card Plates
These plates were used with the address-o-graph machine used in the St. Luke office building. Each plate has a member's name and address which is inked and stamped onto envelopes mailed to them.
Metal. W 10, L 5.75 cm
Maggie L. Walker National Historic Site, MAWA 6993, 6994, 6995, 6996, 6997