Constitution and rules, c.1927-1983; Records of meetings and members 1927-2016; Treasurer's records, 1927-2005; Secretary's records and correspondence 1946-2008; Meet Secretary's records, 1928-2009; Library records, 1929-1998; Editor's records, 1937-1943; Hut records. 1943-2004; Publications. 1937-2010; Photographs. 1927-c 2017; Lantern Slides and 35 mm slides, c 1930s; Newscuttings and related items, 1927-2004; Talks and Lectures and Articles. 1946-1977; Records Compiled by Members, 1895-2001; Memorabilia. 1927-2006; Videos, DVDs and CDs, c 1990-2018; Maps, 1870-1972; Material used in Exhibitions, 1927-2009; Electronic records. c 1929-c 2018
Files relating mainly to North of Scotland Hydro-Electric Board projects, including their effect on the environment, in particular fisheries, and files relating to geese and wildfowl, 1934-1988; reports, proceedings and papers relating to ecological seminars and issues, 1949-1986; publications and newsletters, 1962-1991; items relating to civil defence, 1941-1966; correspondence about the principalship of University College, Dundee, 1936; photographs of plans 1775-1833 of Fife and Kinross, showing turnpikes and ferries; family papers, 1769-1838; maps and plans, c 1960s-1970s.
Daily rainfall postcards, and weekly charts of water levels at selected sites in Scotland and Cumbria including loch levels and river gauging stations. The places recorded include: River Garry, Ness, Foyers, Dochfour Ferry (Ness), Arkaig, Moriston, Gairlochy, Loch Oich, Ness - Fort Augustus, Glen Quoich Lodge, Spey, Aberlour, Spey-Laggan Bridge, Loch Arkaig, Ness Castle Farm, Loch Garry, Spey-Lochaber, Windermere Records, Loch-Gairlochy, Loch Garth, River Oich, River Foyers, River Dee. Also includes Norman Lockyer Observatory Council's Reports, Directors Reports, photograph albums, plans.
Photocopy of notes concerning properties, landowners, tenants and their rights around Blairgowrie, Banff and the forest of Alyth, 1360-1808 with particular reference to law case in 1750 concerning fishing rights on the River Ericht, undated.