Uses transparent overlays to present information about the habits and behavior of whales and to help identify different water mammals.

A profile of the woodsman, politician, and soldier who followed advice of his own motto, "Be sure you're right, then go ahead."

Text, illustrations, and overlays show bears hibernating, caring for their young, hunting and gathering food, and playing.

Brief text and illustrations introduce the world of trains, from the steam locomotives of the nineteenth century to today's high speed electric models.

Tells about the human body using color illustrations, cut-outs and overlapping transparencies.

Follows a hen's egg from the moment it is laid to the time the chick hatches out. Also introduces various egg-laying animals, such as birds, snails, and snakes.

An introduction to the sun, moon, solar system, and different aspects of the earth.

Follows a chestnut tree through the seasons as it sprouts from its seed, blossoms, grows, sheds leaves, and drops new chestnuts that will one day become trees too. Includes a description of different types of trees and how to recognize them.

Explores the inside of the human body, depicting organs, bones, and muscles and how they function. Includes a paper flashlight that can be used to view hidden images.

Biography of the nineteenth-century hunter, trapper, Indian chief, trader, gold seeker, innkeeper, and rancher who discovered a pass in the Sierra Nevadas which bears his name.