Travel Microscope
circa 19th century
circa 19th century
circa 19th century
circa 1807
1892
circa 1922
circa 1861-1865
circa 1861-1865
circa late 18th century
circa late 18th century
1818
circa 1830-1840
circa late 18th century
circa 1820
circa early 19th Century
circa 1830-1850
circa 1837
circa late 18th century
circa 1776
1862
1790-1830
circa late 18th century
1849-01-26
circa 19th century
undated
circa 1770
circa 1835
circa 1800
1839-1841
1861-1862
1827
circa 1800s
1861-1865
1820
1835
circa 1802
1900-05
circa 1949
circa late 18th century
circa 1950
1825
circa 1915-1920
circa 1850
circa 1823
1903
circa mid-19th century
circa 1870-1900
circa mid-19th century
circa mid-19th century
1863
circa 1910
circa 1914-1923
circa late 18th century
circa 1875-1900
1809
circa 1810-1830
circa 1810-1830
circa 1810-1830
circa 1850
1796-07-17
1885