アイオワ準州
President Martin Van Buren appointed him as Surveyor-General of the Wisconsin and Iowa Territories, where he served (most likely in Dubuque, in Iowa Territory) from early 1840 until the end of the Van Buren administration in 1841. In 1845, following the election of another Democrat, James K. Polk, as president, he was reappointed Surveyor-General of Iowa Territory, one year before the southeastern eastern area of Iowa Territory became the State of Iowa.