• A sketchbook of watercolour and pencil scenes, people and flowers from Scotland (including Ben Lomond, River Almond, Carlowrie and Craigiehall Wood), Jerusalem, Nazareth and Galilee, plus loose picture of white house, c.1922-1924
• Two herbarium specimens of historic interest, the first displaying "flowers that spent the night with me in my tent on Eggers Island", 30-31.08.1927, South Greenland, being Carex, Rhodida Rosea, Poa and Calamagrostis; the second displaying a rose from Mrs Mathieson's house, Nanortalik, October 1927; Rose from "Kirsteen", Julianehaab, Disko Island, 09/11/1927; and a carnation from Captain Pedersen's bouquet on leaving Copenhagen for Leith, December 1927.
• Wooden plant press (elm) with leather strap and blotting paper used by Hutchison and with the name C. de Leger inscribed within.
• In 2018 a catalogue, showcasing the Isobel Wylie Hutchison Collection, inspired by Hutchison and launched at Carlowrie Castle in October 2018, along with associated tote bag, was added to the collection.