Daniel Cohen

A biography of the man who discovered Machu Pichu in 1911 and later gave up his scholarly exploration to pursue a career in politics, taking a seat in the U.S. Senate after a two-day term as Governor of Connecticut.

Discusses the physical characteristics, habitat, food, defenses, and extinction of this huge plant-eating dinosaur.

Discusses the physical characteristics, habitat, food, defenses, relatives, and extinction of the triceratops.

Describes the dinosaurs of the period from 140 to 65 million years ago when the earth underwent dramatic changes.

A collection of stories from beyond the grave in which ghosts or spirits spell out the impending doom of the person warned.

Discusses the physical characteristics, habitat, food, defenses, relatives, and extinction of the small but fierce meat-eating dinosaur that lived in prehistoric times.

A collection of ghost stories.

Briefly describes how this dinosaur looked, what it ate, where it lived, and how scientists learned about it.