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Preservation Iowa’s Most Endangered 2018: IOOF/Masonic Lodge Hall, Garnavillo (Clayton County) This wood frame, Greek Revival structure was built in 1860 by I.O.O.F Lodge # 29, the first fraternal organization in Clayton County. The second floor of the building was used as a meeting/ceremonial room for the I.O.O.F, Masons and other lodges and the first… Read more »