Iona, past and present : with maps /
Ritchie, Alec.
Ritchie, Euphemia,1862-1941.
Jehu, T. J.
Edinburgh : Highland Home Industries,
1947.
Includes "A sketch of the geology of Iona, by Professor T.J. Jehu": p.[19]-27.
Includes bibliographical references (p. 27)