James M. McPherson, Ph.D. (Johns Hopkins University, 1963; B.A., Gustavus Adolphus College (St. Peter, Minnesota), 1958) is an American Civil War historian, and the George Henry Davis '86 Professor Emeritus of United States History at Princeton University. He received the Pulitzer Prize for Battle Cry of Freedom, his most famous book. He was the president of the American Historical Association in 2003, and is a member of the editorial board of Encyclopædia Britannica.
I found Marching Toward Freedom a little too simplistic for my taste as a former historian; but I believe its audience was junior high students, and they should find it valuable. The information is good, the writing clear, the subject interesting and well-covered, sympathetic and thus just a bit biased toward Civil War era "colored" people.
A cursory examination of the role of blacks in the Civil Warwith only a few pages devoted to the wartime years. My greatest concern as a historian is that McPherson relies heavily on secondary souces and does not fully develope some concepts.
Don't read all the modern explanations on life during the US Civil War. See and hear it from the lips of those who lived it. True profiles in courage and toleration.