S?H?p?C? ?o?four?n?T?s?o? ?r?e?O?J? ?K?d?K? ?O?G? ?O??? ?The United States Submit Office environment Office began putting in community mail selection boxes within the 1850s exterior article places of work and on street corners in huge towns. Selection boxes were at first mounted on lamp-posts.[four] As mail quantity grew, the Article Office Departm