This event is in the "Adults" group. EVENT POSTPONED - Iowa History Series: Josiah Grinnell & the Underground Railroad 2:30pm - 3:30pm Adults This event is in the "Adults" group. Feb 17 2019 Sun EVENT POSTPONED - Iowa History Series: Josiah Grinnell & the Underground Railroad 2:30pm - 3:30pm Please note you are looking at an event that has already happened. Library Branch: Main Branch Room: Community Room Age Group: Adults Program Type: Program Event Details: Event Postponed due to weather. The WDM Historical Society presents an Iowa history series at the WDM Public Library. Ages 18 & up. No registration.Sundays at 2:30 p.m.