The Denver & Rio Grande Western (D&RGW) Railroad Stock Car No. 5620 is important for its role in agriculture, particularly ranching. The raising of livestock, especially sheep, was an important activity in Colorado and the American West. The railroad moved livestock between summer and winter pastures, a seasonal operation typical of high-country ranching, and also delivered livestock to market. Livestock operations took place in various locations around the state, in particular the southern San Luis Valley and the Gunnison area, including Cimarron-Curecanti.