In addition, he authored or contributed to:* "Reports of Explorations and Surveys to Ascertain the Most Practical and Economic Route for a Railroad from the Mississippi River to the Pacific Coast, Made in 1855–56" (Washington, 1857).
* "Reports of Explorations and Surveys to Ascertain the Most Practical and Economic Route for a Railroad from the Mississippi River to the Pacific Coast, Made in 1855-56" (Washington, 1857).