A FIELD GUIDE TO SHELLS by PERCY A. MORRIS 1975 ILLUSTRATED BOOK ATLANTIC & GULF

FIELD GUIDE TO PACIFIC COAST SHELLS & FIELD GUIDE TO ATLANTIC SHELLS !

SEASHELLS OF NORTH AMERICA PB A Golden Guide to Field Identification 1968

A Field Guide to Shells by Percy Morris

Seashells of North America Golden Field Guide Abbott Like New Crisp Paperback

A Guide To Field Identification Trees of North America 1968 Golden Field Guide

Seashells of North America: A Guide to Field Identification

Field Guide to Pacific Coast Shells by Percy A. Morris (1974, Trade Paperback)