Vista of Engineer Mountain

Postcard US-4005401 to Thailand was a vintage card from the 1960s, with a view of Engineer Mountain Vista in autumn from the Million Dollar Highway, US 550 between Durango and Silverton in the San Juan Mountains of southwestern Colorado.

United States Air Force Academy

Postcard US-4036245 from Colorado shows the United States Air Force Academy (USAFA), located in Colorado Springs, Colorado. According to Wikipedia, it is the youngest of the five United States service academies, with its first class graduated in 1959. Graduates of the Academy's four-year program receive a Bachelor of Science degree, and are commissioned as second lieutenants in the United States Air Force. The Academy is also one of the largest tourist attractions in Colorado, receiving close to one million visitors every year.

President Obama attended the Academy's 2016 graduation ceremony yesterday on June 2, 2016 as the keynote speaker. In his final commencement address of his presidency, Obama shared some of the lessons he learned in the White House as president and commander-in-chief, and warned the graduating cadets about isolationism.

The United States Air Force Thunderbirds performed during the graduation ceremony. However, one of its fighter jets crashed on its way back to the Peterson Air Force Base after the fly-over demonstration.

Diesel Train in the Royal Gorge

Postcard US-3689818 to Russia shows a diesel train in the Royal Gorge, on the Arkansas River, passing underneath the Suspension Bridge - "The World's Highest Bridge", near Cañon City, Colorado, Cañon City, with a population of 16,400 as of 2010 and known as the "Corrections Capital of the World for having nine state and four federal prisons and penitentiaries, is one of the few U.S. cities that have an eñe in its official name.

Two train stamps, among others, were affixed to the card. One was a 33-cent "The Congressional of the Pennsylvania Railroad" from a set of five 1999 stamps entitled All Aboard! 20th Century American Trains. The other “Untitled (Trains on Inclined Tracks),” showing a gouache, colored pencil, and graphite drawing on pieced paper from circa 1960–1963, was one of the five Forever stamps, issued on March 26, 2015, featuring the work of Mexican artist Martín Ramírez who had been confined to psychiatric hospitals for more than 30 years.

I had the sender's address since November 6, 2015. However, the card didn't get posted until December 4, 2015 due to delay from my training for my first half marathon and my encounter of a failed armed robbery. The card had since expired after 60 days, and it was automatically registered by Postcrossing on May 11, 2016 when the account of the receiver was closed.

Spanish Style Building at the Western Horseman HQ

Postcard US-2869219 to the Netherlands shows the January 1955 Western Horseman magazine cover, featuring the historic Spanish-style building in Colorado Springs that was the home of Western Horseman for nearly 62 years. According to the description on the back of the postcard, employees often rode their horses to work and stabled them in the barn located on the property, back in those good old days. The price for each copy was 35 cents in 1955.

Casey Tibbs

Postcard US-2869228 to Japan shows the June 1956 cover, one of Western Horseman's most popular ever, featuring legendary world champion saddle bronc rider Casey Tibbs of Fort Pierre, South Dakota. This shot of Tibbs, in his trademark bib shirt, was taken during the Pikes Peak or Bust Rodeo in Colorado Springs. The magazine sells for 35 cents per copy.

Winter in Colorado

Postcard US-2578514 from Denver, Colorado shows a typical winter scene there. Winters can range from mild to occasional bitter cold, with common snowfalls, averaging 53.5 inches or 136 cm for 1981−2010. Temperature can get as high as 50°F or 10°C at day and as low as 0°F  or −18°C at night. During the first 9 days from January 1 to January 9 in 2014, the highest temperature was 61°F or 16°C and the lowest was -4°F or -20°C with a total precipitation of 0.16 in. or 0.4 cm.