Nicholas Du Bois (January 25, 1823 - August 8, 1879) was an engineer and draughtsman in the Washington D.C. General Land Office. Du Bois was born in Great Bend, Pennsylvania. Little is known of his early education, but in the 1850 census, he appears as an 'engineer'. By 1862, he was a clerk at the General Land Office. Subsequent reports from 1864 name him a draughtsman. He drafted William Keeler's seminal 1867 National Map of the Territory of the United States from the Mississippi River to the Pacific Ocean. By 1873, he was listed as an 'Assistant Surveyor'. Du Bois died in Washington, D.C. in 1879.
