Photograph of line drawing in possession of Engineering Plans and Services Division, Rock Island Arsenal. FIRST FLOOR PLAN, 1873. DELINEATOR- W. OTTO GRONEN. - Rock Island Arsenal, Building No. 225, Rodman Avenue between Flagler Street and Gillespie Avenue, Rock Island, Rock Island County, IL
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Photo credit: © Tango Images / Alamy / Afripics
License: Licensed
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