Benjamin Brotman 1915 Iowa census Ancestry.com. Iowa, State Census Collection, 1836-1925 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2007. Original data: Microfilm of Iowa State Censuses, 1856, 1885, 1895, 1905, 1915, 1925 as well various special censuses from 1836-1897 obtained from the State Historical Society of Iowa via Heritage Quest.