Anne Welsbacher

Describes the physical characteristics, hunting behavior, habitat, and endangered status of crocodiles.

A biography of the fourteenth president, who served during a period of increasing bitterness between the North and the South.

Follows the life and career of the man who served as a Union general, helped the North win the Civil War, and became the eighteenth president of the United States.

Describes the life and career of the Civil War general and Ohio politician who became the nineteenth president of the United States.

Describes the physical characteristics, behavior, and habitat of North American wading birds.

Describes killer whales, their habits, where they live, their hunting methods, and how they exist in the world of people.

Provides an overview of the state of Delaware, covering its history, geography, government, economy, people, and culture. Includes maps, facts, and a timeline.

Uses everyday examples to describe pulleys as simple machines that make lifting, pulling, and moving easier.

Surveys the people, geography, and history of the Commonwealth of Puerto Rico.