By Vernon Leslie. FACES IN CLAY is more than another book on archaeology in that it does not abandon its subject at the end of the Stone Age. Continuing into the era of land acquisition by early settlers, the author with considerable insight, coupled with historical objectivity, proceeds to pursue a number of problems of regional colonial history until the final departure of the Native American population in the later 1700s. Closely integrated with the archaeological section of the book are 67 pages of photographs illustrating types of Upper Delaware Valley Indian artifacts. Pictures of specimens derive from sixteen private collections and four museums. As an aid to the reader and student, this 309 page 7x10" paperback book presents 3 maps, a glossary of archaeological terms, 2 bibliographies, and 2 indices.