The Nation's Capital - District of Columbia

Pre-States: 1902 - 1907 Leather Pads with House Numbers attached

First Year of Issue: 1907

Undated Issues: 1907-1917 Issue, 1969, Current Base Plate

Porcelains: 1907-1917 issue, 

Metal Tab Dates: 1944, 1945, 1948, 1955, each expiring March 31 of their respective years