Telecommunications
1836-1839
1910-1920
1985
1875-1890
Coal Mining
Radio Communication
before 1971
1939-1945
1942-1945
Electricity Supply
c.1935
Scientific Instruments & Research
Printing & Writing
1990
c.1940
Emergency Medicine
c.2000
Collection Unassigned
1989
1992
1993
Therapeutics
1880-1890
1984
Computing & Data Processing
2001
1994
Photographic Technology
1966-1976
1989-1995
Meteorology
Wellcome (general)
1995-1996
Experimental Chemistry
Cinematography
2006
Time Measurement
1975-1979
Domestic Appliances
1999