Patterson Viaduct, Baltimore and Ohio Railroad
1830
1830
1864
circa 1925
circa 1925
circa 1925
1915
1846-09-12
1951-01
1959-04
circa 1950
undated
undated
undated
circa 1950s-1960s
circa 1951
1904
circa 1900-1920
1976
circa 1912
undated
undated
undated
undated
1881
undated
undated
1949-05
1949-05
circa 1902
1949-05
1855
circa 1949-08
1921
circa 1930
circa 1913
1950-10
circa 1850
1954-05-08
1831-09-22
1953-04
1958-01-07
1922-01-28
1950-10
circa 1813
1951-05
1951-09
unknown
circa 1856-1860
circa 1835
circa 1861
circa 1925
circa 1925
1845
circa 1930s
circa 1920
circa 1857
circa 1925
1833-10-19
circa 1925
circa 1880