Logging The Redwoods, Carranco and Labbe, page 52
Oregon Pony, brochure
Centennial History of Oregon, page 520
Oregon Pony at Portland Union Station
Oregon Pony at Portland Union Station, circa 1940 (Post Card)
SP Steam Locomotive Compendium, Strapac and Diebert, page 68
Motive Power of the Union Pacific, Kratville and Ranks, page 19
Motive Power of the Union Pacific, Kratville and Ranks, page 20
Encyclopedia of Western Railroads, Oregon, Robertson, page 100
Encyclopedia of Western Railroads, Oregon, Robertson, page 113
Oregon Pony at Portland Union Station (Post Card)
Watkins Stereoview, 1251
Watkins Stereoview, 1255
Watkins Stereoview, 1263
Watkins Stereoview, 1264
Watkins Stereoview, 1266
Watkins Stereoview, 1270
Watkins Stereoview, 1288
Watkins Stereoview, 1294
Watkins Stereoview, 1297
Watkins Stereoview, 1298
Watkins Stereoview, 1299
Watkins Stereoview, 1312
Watkins Stereoview, 1329