Bridge at Little Falls of the Potomac River, above Georgetown
1797
1797
circa 1796-1798
1813-05-28
1760
after 1848
circa 1910
circa 1910
circa 1910
circa 1910
circa 1910
circa 1910
circa 1910
circa 1910
1800-1810
1863
1881
1826
1884
circa 1910
undated
undated
undated
circa 1984
1984
undated
undated
undated
circa 1920
circa 1910
1913-03-12
1913-02-28
circa 1910
circa 1910
2013
1913
1857
1992-1993
1992-1993
1860
undated
circa 1942-1945
circa 1866
circa 1866
1917-05-14
undated
1796
undated
1804-08-15
1990
1890s
1790-1810
1897
circa 1880
circa 1867
circa 1880
1942
circa 1940-1943
circa 1940-1943
circa 1840
1938