It has been moved!!!

The locomotive on the front of this post card, at the time of this picture, is sitting in quiet retirement in the State Fair Grounds of Douglas, Wyoming. The overall length of the locomotive is 106 feet; it is 12 feet wide and 17 feet tall. The engine and tender combined weigh 317 tons.

This website tells us that it was moved since this picture was taken and is now in the Railroad Interpretative Centre in Douglas. https://www.hmdb.org/m.asp?m=92162 It used to pull for the Chicago, Burlington & Quincy Railroad. Built in the CB&Q shops at West Burlington, IA in September 1940 as one of the last class of steam locomotives on the Burlington. Part of an order for twenty-eight 317 ton units that were identical when built and were assigned Class 0-5A. They were designed for fast freight and heavy passenger service. Baldwin Locomotive works supplied the boiler and General Steel Casting of Chicago supplied the one piece engine beds (frames). Locomotive has roller bearings and Baker Valve Gear. Locomotive saw service system wide on the CB&Q but evidence indicates that #5633 was not operated on the Colorado & Southern through Douglas. Locomotive was in service until 1956, then stored at Lincoln, NE. State Senator Charles G. Irwin and William Lindmier, Jr. were keys to getting locomotive donated to State. This website tells us about the railroad for which this locomotive worked. https://www.american-rails.com/cbq.html Some railroads were seemingly destined to become strong, profitable operations. The Chicago, Burlington and Quincy was one such example. Its history traces back to the pre-Civil War period when trains near or west of the Mississippi River remained a relative novelty. The city of Aurora, Illinois secured chartering rights through the Illinois state legislature for the Aurora Branch Railroad (ABRR) on February 12, 1849. On February 22nd the company was formally organized. This little system was the Chicago, Burlington & Quincy's genesis. It was intended to run north out of Aurora, along the Fox River, reach Batavia and then turn slightly northeastward to Turner Junction (now West Chicago) where an interchange would be established with the G&CU for direct service into Chicago. During the mid-19th century the "Q's" earliest predecessor had established through service to Chicago and then spent the next several decades rapidly expanding. Its slogan, "Everywhere West," was quite befitting for this classic Midwestern granger. The 1850's were a whirlwind decade that witnessed a great deal of expansion and the official creation of the Chicago, Burlington & Quincy Railroad. The Galena & Chicago Union Railroad was renamed to the Chicago & Aurora Railroad on June 22, 1852. On February 14, 1855 the state legislature authorized the C&A to adopt this new name and what followed included the merger of many railroads.

The post card was published by Noble Post Cards out of Colorado Springs, Colorado. There is nothing on the internet that tells me the history of the company.