S?H?p?C? ?o?four?n?T?s?o? ?r?e?O?J? ?K?d?K? ?O?G? ?O??? ?The usa Submit Office environment Section commenced installing public mail assortment boxes from the 1850s exterior article places of work and on street corners in large towns. Assortment boxes ended up in the beginning mounted on lamp-posts.[four] As mail quantity grew, the Article Office Of