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.
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.
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
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.