Telescope
circa 19th century
circa 19th century
circa late 18th century
circa 1830-1840
circa late 18th century
1862
circa late 18th century
undated
1842
circa 1853-1856
1861-1865
circa late 18th century
circa mid-19th century
1811
1804
circa 1871-1873
circa 1910
circa 1914-1923
1976-04-06
circa 1850
1885
1861-1863
1893
1863
circa 1855
1848
circa 1880
1820-1830
1801
circa 1820-1830
1884
circa 1796
circa 1850
1876
circa 1790
1870
1803-1805
undated
undated
undated
1859
1865
1790
1851
1938
1866-1880
1934
1857
1820s
circa 1795
circa 1784-1810
undated
1835-1846
1860
1815
1837
1857
circa 1850
circa 1870
1825
circa 1762-1763