Prototype ‘Manpack’ ground terminals, 1980-1989
1980-1989
1980-1989
1880-1920
1973
1955-1965
1926
1930-1940
1993
(1962); 1982
1985
circa 1953
circa 1910
1934
1930-1940
1920-1925
1917
1887-1903
1996
1996
circa 1927
circa 1930
1915
1938
1938
circa 1960
circa 1960
circa 1960
About 1890
1970-1981
1850-1900
1945
1946
1913
1920-1935
1821-1850
1955-1975
1980-1989
1914-1918
1870-1910
1860-1910
1950-1960
1950-1960
1950-1960
1920-1950
1920-1950
1915-1953
1857-1870
1950-1951
1957
1835
1976-1982