This book tells, in words and pictures, the story of one of the most important points in the study of natural history. Two hundred years ago, Charles Willson Peale, founder of America's foremost natural history museum, heard that a number of large bones were found buried in a farm field in upstate New York. He journeyed there and, with great effort, excavated and eventually assembled the bones into an almost complete fossil skeleton, only the second in the world. It was the first skeleton ever assembled of what we now call a mastodon. Ages 6-10.