'Register of the thermometer taken at qr past 9 morning at half past 8 o'clock evening at Blair Drummond'., 1832-1833., Acc.10069/91. Meteorological records, mostly concerning Scotland and England, collected by the Royal Society of Edinburgh, Robert Mossman and others., Acc.10069/1-114. National Library of Scotland Archives and Manuscripts Division. https://manuscripts.nls.uk/repositories/2/archival_objects/80665 Accessed May 06, 2024.