Another book that was recently published that would be worthwhile reading Is:
Rival Rails: The Race to Build America's Greatest Transcontinental Railroad
by Walter R. Borneman
more information:
Hardcover: 432 pages
Publisher: Random House (September 28, 2010)
Language: English
ISBN-10: 1400065615
ISBN-13: 978-1400065615
Product Dimensions: 6.3 x 1.2 x 9.5 inches
This book covers the construction of railroads into the Southwest. Included in it is the interaction between the Santa Fe and the D&RG at the Royal Gorge and at Raton Pass.
Mr. Borneman has also written
The Admirals: Nimitz, Halsey, Leahy, and King--The Five-Star Admirals Who Won the War at Sea
Polk: The Man Who Transformed the Presidency and America
1812: The War That Forged a Nation
You can find these books at any of several on-line book sellers.
Brian Norden