finish the exploration of the navigable portion of the Colorado. Returning to the Mohave Villages, he then struck out across northern Arizona to Fort Defiance. Ives reported his findings in his 1861 Report upon the Colorado river of the West The Ives expedition produced one of the important early maps of the Grand Canyon drawn by Frederick W. von Egloffstein, topographer to the expedition. Ives next served as engineer and architect for the Washington National Monument from 1859 to 1860. At the beginning of American Civil War he declined a promotion to captain and, despite his Northern birth, he joined the Confederate Army in late 1861. He served in several engineering capacities, and was finally appointed aide-de-camp (with rank of colonel) to President Jefferson Davis from 1863 to 1865. After the war he settled in New York City where he died November 12, 1868. In 1855 he married Cora Semmes Ives. New York State Senator and Arizona Territorial Council President Eugene S. Ives (1859–1917) was their son. References External links U.S. Army Service Profile Joseph Christmas Ives 1828 births American explorers 1868 deaths American botanists American non-fiction writers Confederate States Army officers United States Army Corps of Topographical Engineers United States Army officers United States Military Academy alumni Writers from New York City Military personnel from New York City Explorers of North America Explorers of the United States Scientists from New York (state)