- C. & S.—Colorado and Southern
- D. & R. G.—Denver and Rio Grande
- R. G. S.—Rio Grande Southern
- R. G. W.—Rio Grande Western
- S. G. & N.—Silverton, Gladstone and Northerly
- S. N.—Silverton Northern
- S. R.—Silverton Railroad (Railway)
- W. P. & Y. R.—White Pass and Yukon Railway
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