Education
He graduated from Dartmouth College in 1836 and practiced law in both Derby and Montpelier, Vermont.
He graduated from Dartmouth College in 1836 and practiced law in both Derby and Montpelier, Vermont.
He was an unsuccessful candidate for the United States House of Representatives in 1856, where he ran as a Democrat. Colby was appointed Register of the Treasury and assumed office on August 12, 1864. In early August 1867, he received an honorary Doctor of Laws from Norwich University in Northfield, Vermont. Colby died in Haverhill, New Hampshire following a five-week illness.