These plates were used on signs and/or billboards. O.A. = "Outdoor Advertising"
1932	1933 From 693	1934
1935	1936	1937
1938	1939 From 693	1940
1941 From 693	1942 Repaint.   Egad.	Unknown 1940's From 693
Unknown 1940's	1956 EXEMPT SIGN	1956 EXEMPT SIGN Ross Day - 2449
1956 This document came with the 1956 plate.