Completed in 1934 as part of a Depression-era jobs program, it is one of the small number of such post offices designed by a private architectural firm, Payne & Keefe.

[1] New London's main post office is located in the downtown area, at the northeast corner of Masonic and Union Streets.

The main lobby is decorated with Greek-themed Art Deco work, with multicolored marble floors.

The principal alteration to the building exterior is the addition of a loading dock in 1977; the property was also expanded by the purchase of an adjacent lot for parking.

[2] Media related to Main Post Office (New London, Connecticut) at Wikimedia Commons