The collection holds a 19th century Irish manuscript with covering letter dated 1884. There are a large number of letters and postcards spanning the years 1881 to 1916. The collection also consists of notebooks on archaeological, philological and linguistic topics; drawings of archaeological artefacts; bundles of studies for The Pre- and Proto-Historic Finns; material on the tabulation of Finnish folk tales; printed items, notes, photographs of the Canary Islands; material including photographs, press cuttings, notes on A study of the Bronze age pottery of Great Britain and Ireland and its associated grave-goods. There are inventories of household effects at several addresses, and a box containing material relating to the Hon. Ralph Abercromby (John Abercromby's brother). In addition to a number of photograph albums of views, features and acquaintances, there are five plan chests of unsorted material, mainly illustrative, and also including a folder of material relating to the Hon. Ralph Abercromby.
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