
Model of Chambers' Signal Interlocking Frame
c.1912
c.1912
1959
1959
1959
1876
c.1912
c.1912
1963
1986
1960-1990
1959
1964
100-1 BCE; 1501-1600; 1914
digital copy 2015; original [1803?-1809].
1949
c.1913
1983 (replica); 1866 (original)
1935-02-19
1935-02-19
circa 1950; (circa 1890)
2022
1897
1933
1935-02-19
1975-02
1965-1975
1965-1975
1926
1933
1934-5
2018-09-11