Revision History for U.S. Geological Survey Circular 1475

By: Annie Scott and Eleanour Snow

The 150th Anniversary of the 1869 Powell Expedition—USGS Participation in the Sesquicentennial Colorado River Exploring Expedition and Reflections from the ~1,000-mile Journey down the Green and Colorado Rivers
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Posted online December 3, 2020

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Revised and reposted December 14, 2020 as version 1.1

On pages 15 and 72 of the text, in the map showing Segment H, the location symbol for Pearce Ferry, Arizona, was incorrectly placed. Additionally, on page 72 the leader extending from the "Pearce Ferry, Arizona" label to the symbol was incorrectly placed. On both pages the location symbol has been moved to the correct position, and on page 72 the leader has been correctly repositioned.

On page 84 of the text in the References Cited, in the "Powell, J.W., 1875" reference, the semicolon after "tributaries" was changed to a comma. Also, following the colon, the phrase "U.S. Geological Survey unnumbered series report" was changed to "Washington, D.C., U.S. Government Printing Office."