1971-1980

1971 – Wildlife Conservation


1971 – Historic Preservation


1972 – National Parks Centennial


1972 – Colonial Craftsmen

1972 – Olympics


1972 – Wildlife Conservation


1973 – Boston Tea Party

1973 – American Arts


1973 – Postal Workers


1973 Progress in Electronics


1973-74 Rural America


1974 Universal Postal Union (UPU)

1974 Mineral Heritage


1974 First Continental Congress


1975 American Arts


1975 Contributors to the Cause


1975 Military Uniforms

1975 Apollo Soyuz


1975 Postal Service Bicentennial


1975-1982 Americana

1975-1981 Americana Vertical Coils


1976 State Flags


1976 Innsbruck Olympics


1977 Pueblo Art (American Folk Art)


1977 Butterflies


1977 Skilled Hands for Independence


1978 Quilts (American Folk Art)

1978 American Dance


1978 CAPEX


1978 Wildlife Conservation

1978 American Trees


1979 Pennsylvania Toleware (American Folk Art)

1979 American Architecture

1979 Endangered Flora


1979 Moscow Olympics


1980 Lake Placid Olympics


1980 National Letter Writing Week


1980 Coral Reefs


1980 Pacific Northwest Indian Masks

1980 American Architecture