More about Elk City Listings continue below, or back to top of page . Named for Howell Cobb, one of few military posts in present-day OK that was active garrison at outbreak of Civil War. Listings continue below, or back to top of page . More about Fort Sill Listings continue below, or back to top of page . More about Frederick Listings continue below, or back to top of page .
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Built 1912, on National Register of Historic Places, tours by appointment. More about Hobart Listings continue below, or back to top of page . More about Old Plantation Listings continue below, or back to top of page . Listings continue below, or back to top of page . Listings continue below, or back to top of page .