"Sandy River & Rangeley Lakes Railroad and Predecessors, Volume 4, completes the presentation of the equipment: SR and SR&RL built equipment, "Snowplows" built by Joseph M. Whittier, Unknown Builders and Miscellaneous builders Rosters: Eustis, F&M, P&R, SR, SR&RL. The format, page count, etc. is identical to previous volumes in this series." Hardcover. 266 pgs.