1999-P&D Delaware Washington State Quarters - Postal Commemorative Society with (2) Stamps and state data sheet.   

1. Unused 1948 3-cent stamp honoring the centennial of the American Poultry Industry issued September 9, 1948.

2. Unused 1951 3-cent stamp honoring the 75th Anniversary of the founding of the American Chemical Society issued September 4, 1951.