Octavo, 22 numbers (bound as two books), 68 (Volume 8); 72 (Volume 9); 68 (Volume 10); 72 (Volume 11); 70 (Volume 12); and 88 (Volume 13) pages with illustrations plus plates and the original printed wrappers.
Contemporary non-uniform binder's cloth flecked (heavily in one case), with the title written in ink on the spines; very good copies (with the contents in fine condition, apart from minor wear along the hinge of one folding plate).
Provenance: Frank Trigg (1876-1963), with his personal 'Conchological Library' bookplate on the front pastedowns, his annotations on the front flyleaves, and his occasional signature or initials. Frank Trigg 'held the office as treasurer and committeeman of the Field Naturalists' section [of the RGGS] for a number of years. He was also a past chairman of the Malacological Society' (Port Elliot 'Southern Argus', Thursday 25 April 1935). He was also the SA Government Printer from 1935 to 1941. Many of these issues contain contributions by him in his capacity as secretary of the South Australian Shell Club. Many of the other contributors are well-known: John Burton Cleland, Edwin Ashby, Herbert Hale, Bernard Cotton, Walter Howchin, John Black, Ernest Ising, Charles Fenner ... even George Aiston and Norman Tindale make cameo appearances. [2 items].