Islands of Canna and Sanday, small isles parish, Inverness-shire / 
R. S. B.
Brown, R. S.
[Edinburgh :  Royal Physical Society of Edinburgh, 
1938]
Based on O.S. 6" maps, 1903 edition; contours from 1" Popular edition.
In: The natural history of Canna and Sanday: a report on the Glasgow University Canna expeditions 1936 and 1939. (Proc. Royal Physical Soc. of Edinburgh; vol. 23, 1938).