- British Electric Transformer Co Ltd, Hayes: patent register, photographs, technical drawings and misc further records 1924-68 (ADB/08/15)
- Milton Hutchings, nurserymen, Hillingdon: glass negatives (ADB/08/49)
- Evelyn's School, Hillingdon: book giving accounts of pupils killed during Second World War c1939-45 (ADB/08/14)
- Hillingdon parish enclosure: commissioners minutes 1812-19 (ADB/08/09)
- Uxbridge Conservative and Unionist Association, Harmondsworth ward: record book 1945 (A06/106)
- Colham manor: survey 18th cent (ADB/08/10)
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Hillingdon Local Studies and Archives