James J. Holmberg is Curator of Special Collections, The Filson Historical Society. James P. Ronda is H. G. Barnard Professor of Western History at the University of Tulsa.

"With Dear Brother we get a chance to see into the heart of William Clark and finally acknowledge how indispensable he was to the success of the Expedition. We now have a much more complete portrait of the man who co-piloted and mapped the Corps of Discovery to its rightful place in the history of North American exploration." Stephen E. Ambrose "Solving a few of the mysteries that have lingered through scores of biographies and shedding new light on a number of other historical controversies, these letters will be treasured by all aficionados of Lewis and Clark." Stephen Aron, University of California, Los Angeles

James J. Holmberg is Curator of Special Collections, The Filson Historical Society. James P. Ronda is H. G. Barnard Professor of Western History at the University of Tulsa.

"With Dear Brother we get a chance to see into the heart of William Clark and finally acknowledge how indispensable he was to the success of the Expedition. We now have a much more complete portrait of the man who co-piloted and mapped the Corps of Discovery to its rightful place in the history of North American exploration." Stephen E. Ambrose "Solving a few of the mysteries that have lingered through scores of biographies and shedding new light on a number of other historical controversies, these letters will be treasured by all aficionados of Lewis and Clark." Stephen Aron, University of California, Los Angeles

James J. Holmberg is Curator of Special Collections, The Filson Historical Society. James P. Ronda is H. G. Barnard Professor of Western History at the University of Tulsa.

"With Dear Brother we get a chance to see into the heart of William Clark and finally acknowledge how indispensable he was to the success of the Expedition. We now have a much more complete portrait of the man who co-piloted and mapped the Corps of Discovery to its rightful place in the history of North American exploration." Stephen E. Ambrose "Solving a few of the mysteries that have lingered through scores of biographies and shedding new light on a number of other historical controversies, these letters will be treasured by all aficionados of Lewis and Clark." Stephen Aron, University of California, Los Angeles