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Small letter box, ca. 1890
Letter box, 1896
White letter box, 1899
Pneumatic tubes, ca. 1910
Post-mounted mailbox, 1920s
Gehring Mail Distributing Machine, 1922
Gehring Mail Distributing Machine, 1922
Scales and handstamps, 1925
Mail chute, 1934
Large rural mailbox, 1937
Leather satchel and tie-out straps, 1939
Letter sorting cases, 1940
Ranch mailbox, 1941
Sestack Letter Sorter, 1945
Stamp vending machine, 1948
Carrier for pneumatic tube letters, ca. 1950
Pneumatic tubes, ca. 1950
Letter box, ca. 1950s
Nutting trucks, ca. 1950s
Post Office screenline, 1950s
Cooperative mailing rack, 1954
Collection box, ca. 1955
Adjustable platform stools, 1956
Experimental foot-pedal mailbox, 1956
Stamp vending machine, 1956
Greller parcel sorter, 1957
Hamper dumper, 1957
Transorma letter sorter, 1957
Bell letter sorter, 1958
Facing table and canceling machine, ca. 1958
Snorkel mailbox, ca. 1958
Automatic address reader, 1959
Automatic facer-canceler, 1959
Carrier case and table, ca. 1960
Satchel cart, ca. 1960
Stainless steel mailbox, 1967
Dual collection boxes, 1968
Collection box with star, 1970s
Distribution cases, 1972
Letter box, 1972
Letter sorting machines, ca. 1974
Extension pole, 1975
Optical character reader, 1982