![](http://www.alamy.com/thumbs/6/14A8BDB7-264B-4880-9E14-0F0A53C1FB17/ATB1A6.jpg)
The knuckle and coupling hose on a steam engine United States
Size: 3457px × 5200px
Photo credit: © Vespasian / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: america, casey, choo, coupling, cowcatcher, destination, engine, explore, holiday, holidays, hose, industry, iron, jones, knuckle, landmark, museum, pa, rail, railroad, railroading, sights, sightseeing, steam, steel, tourism, train, travel, usa, vacation, vertical, visiting