In addition to his famous and influential Artillerist's Manual of 1859, he is the author of Personal Recollections of the Civil War (published posthumously in 1928) and Adventures on the Western Frontier (also posthumous, 1994) along with many articles in magazines and journals, typically recounting his time in the West and providing his opinions on the government's policy toward Native Americans.
Udover hans berømte og indflydelsesrige Artillerist's Manual fra 1859 var han forfatter til Personal Recollections of the Civil War (udgivet posthumt i 1928) og Adventures on the Western Frontier (også posthumt, 1994) sammen med mange artikler i aviser og blade, hvor han typisk berettede om sin tid i Vesten og gav sin holdning til kende om regeringens politik over for indianerne.