Utah-Idaho-Montana Issue by various authors.
Contents:Utah & Northern by Mallory Hope Ferrell. A history of the Ogden-Butte line of the Union Pacific Railroad which started out as the narrow gauge Utah & Northern, pp. 9-81.
Union Pacific: Montana Division by Cornelius W. Hauck. A profusely illustrated story of the operations on the Butte line after standard gauging, pp. 93-160.
Gilmore & Pittsburgh by Rex Myers: Northern Pacific Subsidiary, Union Pacific Tributary. Covers a virtually unknown standard gauge line in Idaho's Salmon River country, pp. 161-216.
Colorado Railroad Museum, hardcover with dust jacket, 216 pages, standard portrait book 10 x 8 in., over 200 photographs, rosters and maps.