Fort Jefferson wireless mast foundation   Publication Date:   1902 Creator:   Monroe County Public Library System May Hill Russell Library -- History Dept Format:   1 photograph : cyanotype ; 6 x 8 in. Subjects.Display:   Photographs -- Monroe County (Fla.) Monroe -- 12087 Fortification -- Design and construction -- Photographs -- Florida Photographs -- Fort Jefferson (Fla.) Buildings, structures, etc -- Photographs -- Dry Tortugas (Fla.) Photographs -- Dry Tortugas (Fla.) Source Institution:   Florida International University Donor:   Charles, Mary C. [1902] Fort Jefferson wireless mast foundation