This is a vintage navigational map / chart - # 11428 Okeechobee Waterway - St. Lucie Inlet to Fort Myers and Lake Okeechobee. 19th Edition - Sept 28, 1981. If laid out flat, the chart measures 20" by 58 1/2". It folds up to measure 10" by 5". Good condition. Shipping is $7.00 if within the USA. Check out my other items. I have quite a few different navigational charts listed. I have quite an eclectic mix of interesting items listed, and am always adding more. Please add me to your favorites list.