Signal at Stillpond, Maryland. Instrument height of 120 feet - top of signal 275 feet. 39th Parallel Survey. Record signal height from wooden tower
Photo Category: Geodesy - Triangulation - Towers - Wooden
Photo Location: Maryland
Photo Date: 1880?
| Added On | 18th October 2015 |
| Viewed | 12 viewed |
| Downloads | 2 Downloaded |