25 books • 9 series
Blue Whales (Wild World S.) (Animals on the Brink) (Animals on the Brink) (Animals on the Brink) (Untamed World) (Untamed World)
Great African Americans in Government (Outstanding African Americans (Pb)) (Outstanding African Americans S.)
Gorillas (Animals on the Brink) (Animals on the Brink) (Animals on the Brink) (Untamed World) (Untamed World) (Wild World S.)