Chart Of The Head Of Navigation Of The Potomac River : Surveyed By Order Of The Sec. Of War For The Corporation Of Georgetown D.C. With A View To The Improvement Of The Georgetown Channel 1857 26.6 in. X 41.4 in. (Original Size)
Map Of Part Of The Potomac River, From The Head Of Tide Water To Alexandria : With Its Lateral Canals, Soundings, And Topography In 1835 44 in. X 75.6 in. (Max Size)
Chart Of The Head Of Navigation Of The Potomac River : Surveyed By Order Of The Sec. Of War For The Corporation Of Georgetown D.C. With A View To The Improvement Of The Georgetown Channel 1857 26.6 in. X 41.4 in. (Original Size)
Map Of Part Of The Potomac River, From The Head Of Tide Water To Alexandria : With Its Lateral Canals, Soundings, And Topography In 1835 44 in. X 75.6 in. (Max Size)