Big Boy CabBig Boy 317Big Boy 319Georgetown Loop Railroad. 177Georgetown Loop Railroad .004Georgetown Loop Railroad. 005Georgetown Loop Railroad. 209Georgetown Loop Railroad. 215Georgetown Loop Railroad .006Georgetown Loop Railroad .007Georgetown Loop Railroad. 008Georgetown Loop.009Chtrain100604.0106Chtrain100604.0139Chtrain100604.0184Engine No.5629 Burlington 4-8-4 317 ton locomotive at Denver Railroad Museum