•Two newspaper cuttings, 3 Mar 1913 & 4 Jan 1914, (Isaac Bayley Balfour was a member)
Selbourne Society• Letter to Dr. Robert Wright regarding Orchids, dated 8 Sep.1832
•Copy of a typed letter [for I.B.B] from Dr. Masters, regarding having a memoir of Lindley prefacing one of ‘their’ volumes of the Annals of Botany (21 Jun 1903)
•Pilcomayo River Expedition. Letters dated 1889 -1890 to I.B. Balfour filed with I.B. Balfour correspondence under “Kerr, J.G.” Index page 97.
Kerr, John GrahamPhotocopy of the article ‘The Ascent of Mount Everest' by Col. Godwin-Austin ’
reprinted form the “Surrey Advertiser” January, 22nd, 1921. Sent to Prof. Bayley Balfour with the author’s best wishes, Feb. 8, 1921
Eichler - References filed in “Balfour, I.B” papers under “Oxford University Press”
Eichler, August Wilhelm