National Geographic : 1954 Jul
© National Geographic Society 137 Kodachrome by National Geographic Photographer David S. Boyer A Coin-fed Robot Stamps, Postmarks, and Mails Letters for Post Office Customers Mailomat takes the patron's money and registers the amount in the window above her hand. Then the machine whisks away her envelope, prints the amount of postage she has dialed, postmarks city and date, and deducts the cost of each letter from her deposit. This Mailomat, installed in the lobby wall, ejects letters directly into the Washington, D. C., Post Office. Fifty-eight other machines are scattered across the country.