Issued by the United States on September 9, 1977, this attractively-designed stamp commemorates the 200th anniversary of the founding of El Pueblo de San Jose de Guadalupe, the first civil settlement in Alta California. Scott Cat.# 1725.

This mint U.S. stamp commemorates the 150th anniversary of Fort Snelling, the military fortification built primarily to protect the expanding Northwest Terrirtory from protected the northwestern territories from Canadian and British encroachment. The fort was built at the confluence of the Minnesota and Mississippi Rivers in Minnesota. The stamp design features the fort, a keelboat and tepees. Scott Cat.# 1409.

This U.S. mint stamp commemorated the 150th anniversary of the 1821 entry of Missouri into the Union. The stamp design features detail from Independence and the Opening of the West, a mural by Thomas Hart Benton. Issued on May 8, 1971. Scott Cat.# 1426.

This mint U.S. stamp, issued on April 29, 1964, pays tribute to John Muir, the naturalist and conservationist whose efforts helped save California's priceless forests. The stamp design features john Muir and Giant Redwoods. Scott Cat.# 1245.

This Oregon Territory issue commemorates the 100th anniversary of the signing of the Oregon Bill by President James Polk in 1848. The two men featured on the stamp are Jason Lee and Dr. John McLoughlin. Lee petitioned Congress for Territory status. McLaughlin, known as the "Father of Oregon," served as administrator for the Hudson's Bay Company. The stamp additionally features a covered wagon and oxen. Issued on August 14, 1948. Scott Cat.# 964.

The centennial of the formation of the Kansas Territory from unorganized Indian reservations was commemorated by the issuance of this mint U.S. stamp on May 31, 1954. The attractively-engraved stamp design features an oxen-driven wagon train, horse and wheat field. Scott Cat.# 1061.

This mint stamp, issued by the U.S. on February 14, 1962, marked the 50th anniversary of the admission of Arizona as the 48th state. The stamp design features a night scene of a Giant Saguaro Cactus in bloom. Scott Cat.# 1192.

In 1898, the U.S. issued a series of nine stamps commemorating western expansion; the $1.00 stamp from that set, known as "The Western Cattle in Storm," is arguably the most popular U.S. commemorative stamp ever issued. The item offered here is a 1998 re-issue of this stamp (in a complete mint sheet of nine stamps). While the original stamp was issued in black ink only, this re-issue is bi-colored. Scott Cat.# 3210. See also item# AW2.

This mint stamp honors Major John Wesley Powell, an eminent geologist well-known for his exploration of the Colorado River in 1869. Issued by the United States on August 1, 1969, this stamp marks the 100th anniversary of the event. The design shows Powell and his crew running rapids.

Issued by the United States on July 14, 1951, this mint stamp commemorates the 100th anniversary of the first settlement in Nevada. The design features a homestead scene in the Carson Valley. Scott Cat.# 999.

The United States commemorated the 100th anniversary of California's statehood with the release of this nicely engraved mint stamp on September 9, 1950. The stamp design features a gold miner, a pioneer couple, the steamship S.S. Oregon, fruit and oil rigs. Scott Cat.# 997.

The centenary of the introduction of Aberdeen Angus cattle in the U.S. is commemorated on this mint stamp. The stamp design also features Longhorn cattle in the background. Issued by the U.S. on October 5, 1973. Scott Cat.# 1504.