VGC.Sheridan House,1991.First US edition-first impression.Paperback(some dents,nicks,creases ad scratches on the cover and spine) in VGC.Illustrated with b/w photos,drawings,diagram.Nice and clean pages with small ink marks and light shelf wear on the outer edges,a couple of creases,nicks and light shelf wear on the edges of the pages.The book is in VGC with light shelf wear.272pp including Foreword.