Federal Hill observatory tower
circa 1900
circa 1900
circa 1700-1720
circa 1795
1790
circa 1860-1900
circa 1954-02
1950-10
1950-10
1896
1810-1819
1992-1993
2000
2000
1942
circa 1852
undated
undated
1865-09-30
1851
1859
1822
1886
circa 1895
1858
1903
1903
circa 1984
1912
undated
1894-07-05
1875
1904
1904
circa 1962-1977
circa 1955-1977
1896
circa 1815-1872
1917-05-14
1917-05-14
circa 1905
1917-05-14
1917-05-14
1917-05-14
1917-05-14
1871
circa 1911
circa 1930
1803
undated
1881
circa 1830
1896
1912
1954-05-15
circa 1925
circa 1925
circa 1820
circa 1922
circa 1900-1910
circa 1826