Historic Places/Tours Pulsifer House Built in 1844 and is on the National Historic Register. Home to the Historical Society. Putnam County Historical Society 327 Old Highway 26 501 Old Highway 26 Hennepin 815/925-7560 www.rootsweb.ancestry.com/~ilpchs/ Open Wednesdays & Fridays from 10-3, the Pulsifer House is an 1844 Greek Revival home. The Ag Museum is a collection of agricultural/period artifacts.