This is the House of Representatives version of Volume XI and includes only section one. The text is divided into six chapters and covers the various surveying expeditions from 1800 to 1857. There are four reduced maps included accompanying 120 pp. of text including: A General Map of North America, Western Part of the Continent of North America, Map of North America and Territory West of the Rocky Mountains. The large folding map found in some versions at the back of this report, known as "Warren's General Map", is not included. Report is protected by blue paper wrappers.

References: Wagner & Camp #266.C

Condition: B

The maps and text have scattered foxing and one of the maps is partially separated from the binding. Ex-Library stamp on title-page.