The Woolly Mammoth

by William R. Sanford and Carl R. Green

Published 1 January 1989
Describes what is known of this prehistoric ancestor of the elephant, based on the preserved remains of mammoth bodies.

The Dodo

by William R. Sanford and Carl R. Green

Published 1 November 1989
Discusses the flightless bird that lived on the island of Mauritius and why it became extinct in the 1600s. Also describes the efforts of conservationists to protect endangered birds.