Consists of railroad and business passes with some correspondence. A few of the passes were made with silver; most were printed on paper. The bulk of the collection comprises annual passes with a few single ride passes. Companies that provided business passes were closely related to the railroad industry. These passes include hotel, transportation, and mail and telephone services. Collection includes passes from the Rio Grande Western Western RR, San Luis Southern RR, Colorado Midland and the Denver, Laramie & Northwestern RR.