1 vol. (119 p.) : ill., couv. ill. en coul. ; 24 cm.
Introduction --; Before Hoover Dam --; Author Powell Davis's great idea --; From idea to approved project --; The people who built Hoover Dam --; Construction begins --; Dams in the world today
Dams -- Design and construction -- Juvenile literature.
Hoover Dam (Ariz. and Nev.) -- Juvenile literature.
Water-supply -- Southwest, New -- Juvenile literature.