First Thus (Tuttle) Edition, 1971. An exhaustive guide to shell collecting in Kwajalein, with numerous black and white illustrations and descriptions. Wrappers retain most of their original gloss, but show bumping, rubbing and scuffing. Spine is sun-faded. Page edges are toned, but pages are bright and clear with a tight binding. A previous owner's name is stamped in ink at top of first title page.