City-Data.com: Winthrop, Iowa - Profiles housing, population demographics, jobs, weather and climate tables. Contains a list of area hospitals, schools, airports, radio and TV broadcast stations, photographs and maps. - http://www.city-data.com/city/Winthrop-Iowa.html
Wikipedia: Winthrop, Iowa - Encyclopedia article covers geography and demographics of this city in Buchanan County. - http://en.wikipedia.org/wiki/Winthrop,_Iowa
East Buchanan Community Schools - Serving Quasqueton, Winthrop and Aurora. Features district news, an administration directory, and resources for parents, students, and faculty. - http://www.east-buc.k12.ia.us/