This is no. 39 in the Gateway Life Science series and seems like the end-all in juvenile non-fiction about North American deer. The author was formerly curator of mammals and birds at the Bronx Zoo and well known for his beginning reader books on animals, insects, birds and reptiles published by Morrow. This book covers all the varieties of deer to be found on this continent. There are chapters devoted to moose, elk, caribou and reindeer. There is an interesting section on stages of antler growth and what the different number of points mean. Explanations of their habits and life cyles are direct and clear.