Federal Hill observatory tower
circa 1900
circa 1900
1861
1874
circa 1844-1850
circa 1895
circa 1895
circa 1934-1940
1858
circa 1865
circa 1924
1913-03-31
2005-03-13
1877
1971-10-19
1906
undated
circa 1970
circa 1910
circa 1910
circa 1910
circa 1910
circa 1910
1958-01-07
1913-03-12
1913-03-12
1913-03-12
1913-03-12
1913-03-31
1913-03-12
circa 1948-03
1862
1817
circa 1993
circa 1993
circa 1993
circa 1993
circa 1993
circa 1993
1782
1955
1904
circa 1925
1888-09
1888
circa 1890
1913-03-12
1755-1780
circa 1875
1949-10
1829
circa 1857
1858
1804
circa 1925
1904
1930-03-01
circa 1870
1918-1920
1880-10
circa 1881-1883