1973

Love.

1475

-

Rise of the Spirit of Independence.

Printer.

1476

-

Posting A Broadside.

1477

-

Postrider.

1478

-

Drummer.

1479

-

The Boston Tea Party, Bicentennial Era.

British Merchantmen.

1480

-

British Three Master.

1481

-

Boats.

1482

-

Boat and Dock.

1483

-

American Composer.

George Gershwin.

1484

-

American Poet.

Robinson Jeffers.

1485

-

American Painter.

Henry O. Tanner.

1486

-

American Novelist.

Willa Cather.

1487

-

Copernicus 1473 - 1973.

1488

-

U.S. Post Service Employees.

Stamp Counter.

1489

-

Collection Boxes.

1490

-

Mail Sorting..

1491

-

Mail Sorting.

1492

-

Mail Canceling.

1493

-

Manuel Mail Sorting.

1494

-

Electronic Mail Sorting.

1495

-

Mail Trucks.

1496

-

Mailman.

1497

-

Rural Delivery.

1498

-

Harry S. Truman.

1499

-

Progress in Electronics.

Marconi Spark Coil & Spark Gap.

1500

-

Transistors.

1501

-

Radio & TV.

1502

-

Lyndon B. Johnson.

1503

-

Rural America.

Angus Cattle.

1504

-

Chautauqua.

1505

-

Kansas Hard Winter Wheat 1874 - 1974.

1506

-

Christmas.

1507

-

1508

-