D.B. Roberts with engineering crew on Key Largo   Publication Date:   1906 Creator:   Monroe County Public Library System May Hill Russell Library -- History Dept Format:   1 photograph : sepia ; 8 x 10 in. Subjects.Display:   Photographs -- Monroe County (Fla.) Monroe -- 12087 Railroad construction workers -- Photographs -- Florida -- Monroe County Photographs -- Key Largo (Fla.) Surveyors -- Photographs -- Florida -- Key Largo Source Institution:   Florida International University D.B. Roberts with engineering crew on Key Largo

Key Largo Rock Castle   Publication Date:   1920/1929 Creator:   Monroe County Public Library System May Hill Russell Library -- History Dept Format:   1 photograph : sepia ; 3 x 5 in. Subjects.Display:   Photographs -- Monroe County (Fla.) Monroe -- 12087 Castles -- Photographs -- Florida -- Key Largo Houses -- Photographs -- Florida -- Monroe County Historic buildings -- Photographs -- Florida -- Key Largo Buildings, structures, etc -- Photographs -- Key Largo (Fla.) Photographs -- Key Largo (Fla.) Source Institution:   Florida International University Key Largo Rock Castle