OCLC, May 8, 2003 (hdg.: Gathorne-Hardy, Geoffrey Malcolm; Gathorne-Hardy, Geoffrey Malcolm, 1878- ; Gathorne-Hardy, G. M.; usage: Geoffrey Malcolm Gathorne-Hardy, G.M. Gathorne-Hardy, G. Gathorne-Hardy)
Prichard, H. H. Through trackless Labrador, 1911
Wikipedia 14 Jan. 2012 (Geoffrey Malcolm Gathorne-Hardy, who wrote as G. M. Gathorne-Hardy (28 January 1878-7 January 1972) was an English soldier, writer and Norse specialist.