You are looking on one book 5 1/2"by8 1/2"48page softcover copy of "GENERAL GUIDE CHICACO NATURAL HISTORY MUSEUM" byFormerly Field Museumn of natural history, printed in1961.This item is in good condition with a little bit of soiling and rubbing of the covers,all pages are clean and tight.Filled with diagrams and detailed information. Thanks for Looking.A24***Powered by eCRATER
