Issued on July 11, 1998, this U.S. mint stamp commemorates the 400th anniversary of the Spanish settlement of the Southwest. The stamp design features La Mision de San Miguel de San Gabriel in Espanola, New Mexico. Scott Cat.# 3220.

The centennial of the Klondike Gold Rush in the Yukon Territory is commemorated on this mint U.S. stamp. The design features a long line of prospectors trudging up a mountain trail (probably Chilkoot Pass). Scott Cat.# 3235.

This mint stamp, a component of the U.S. "Liberty Series" set of regular issue stamps, features the Palace of the Governors in Santa Fe, New Mexico. This adobe structure, built in the early 17th century under the direction of the governor of of the Spanish Territory in the Southwest, is the oldest continuously occupied public building in the United States. It remained a seat of government for centuries. Issued on June 17, 1960. Scott Cat.# 1031A.

Issued by the U.S. on March 2, 1953, this interesting mint stamp commemorated the 100th anniversary of the organization of Washington Territory. The stamp features the Centennial medallion at left and a pioneer family looking over a lake at right. Scott Cat.# 1019.

Issued on June 18, 1999, by the U.S. Postal Service, this mint stamp commemorates the 150th anniversary of the 1849 California Gold Rush. The attractive design features miners working a claim. Scott Cat.# 3316.

Issued by the U.S. Postal Service on June 18, 1999, this complete mint sheet of 20 stamps commemorates the 150th anniversary of the 1849 California Gold Rush. The attractive design features miners working a claim. Scott Cat.# 3316.

Issued by the U.S. Postal Department on June 8, 1959, this mint stamp commemorated the 100th anniversary of the discovery of the Comstock Lode. The resulting mining operation produced about 300 million dollars in silver in its first 20 years. The stamp features Henry Comstock with a horse and miners. Scott Cat.# 1130.

The 100th anniversary of Oregon Statehood (1859-1959) is commemorated on this mint U.S. stamp. The design features a covered wagon and Mt. Hood. Issued on February 14, 1959. Scott Cat.# 1124.

Issued on July 16, 1969, this U.S. mint stamp commemorates the 200th anniversary of the European settlement of California. On July 16, 1769, a Spanish expedition led by Captain Gaspar de Portola entered what is now San Diego. The stamp depicts the Carmel Mission Belfry. Scott Cat.# 1373.

Featuring a portrait painting of Chief Joseph by Cyrenius Hall, this mint stamp was issued by the U.S. on November 4, 1968, to honor American Indians and as a dedication to the then new National Portrait Gallery in Washington D.C. (This Chief Joseph portrait hangs in the Gallery). Chief Joseph 1840-1904) was the leader of the Wallowa band of the Nez Perce, a Native American tribe indigenous to the Wallowa Valley in northeastern Oregon. Scott Cat.# 1364.

This mint United States stamp was issued on October 15, 2025 to commemorate the 75th anniversary of the historic land run by more than 100,000 would-be homesteaders into northern Oklahoma. The "land-runners" were competing for 40,000 available home sites. The stamp features running horses and a buggy. Scott Cat.# 1360.

This attractive mint stamp commemorates Montana's centennial with a design by artist Charles Russel ("C.M. Russell and Friends"). A great stamp for collectors of horses, art or the American West on stamps. Issued by the U.S. Postal Service on January 15, 1989. Scott Cat.# 2401.