Description: Digitization provided by the USF Libraries Digitization Center. Rare Maps. This is a detailed map of Florida showing counties, cities, roads, railroads, inland waters, etc with an inset of the Plan of the Florida Keys. Prime Meridians: Greenwich and Washington. Measurements.Dimensions: 29 x 36 cm. on sheet 37 x 44 cm. Measurements.Resolution: Scale ca. 1:2,600,000 Source: Ormando Willis Gray, Gray's Atlas (Philadelphia, PA: O. W. Gray and Son, 1875) 107 Map Credit: Courtesy of the Special Collections Department, University of South Florida.