- Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, volume 12, page 200.
- Hudson, Wisconsin (Wikipedia)
Hudson is a city and county seat of St. Croix County, Wisconsin, United States. As of the 2020 United States census, its population was 14,755. It is part of the Minneapolis–St. Paul Metropolitan Statistical Area (MSA). The village of North Hudson is directly north of Hudson.