London: Edward Arnold & Co 1927. xii, 289 pages + plates and 8 pages of ads. Publisher's blue cloth binding. Lacks the scarce dust jacket. Several nicks to top edge boards, minor foxing. Laid in is a manuscript letter with envelope, presumably in the author's hand indicating regrets for an invitation to visit a Mr. H. Seton at Number Six Club in Cambridge MA. Very Good. Cloth. 
Number Six Club is an MIT fraternity which hosts periodic lectures and whose website notes they are "a group which collectively aims to develop a cultured understanding of the world through discussion and debate". Presumably they invited Collet to lecture there.