Specimen of First Telegraph Line, 1837
1837
1837
1837
1837
1955; 1830
1835
1837
2000-100 BCE
1893-4
1837
1835
1934
1863-7
1837
1836
1837
1837
1772 (original); 1919 (model)
1930 (replica); 1834 (original)
1986 (replica); 1501-1600 (original)
1990-96
1835
4000-2001 BCE
1837
1705-1737
1870-1877
1835
1830 (original); 1967 (model)
1775-1799 (original); 1900-1907 (model)
1888-185
1836
1836
1871-1830
1837
1837
1836
1837
1837
1835
1837
1835
1835
1835
1835
1835
1835
1836
1835
1836
2000-1350
1836