12 books • 5 series
Unicorns (Are They Real?)
Witches (Are They Real?)
World War II in Eastern Europe
Fossil Hunters (Science Adventurers)
12 Immigrants Who Made American Science Great (Nation of Immigrants)
12 Immigrants Who Made American Arts Great (Nation of Immigrants)
12 Immigrants Who Made American Technology Great (Nation of Immigrants)
Famous Ships (Set) (Famous Ships)
The Titanic Story (Famous Ships)
Hidden Heroes (Set) (Hidden Heroes)
The Stonewall Riots: The Fight for Lgbt Rights (Hidden Heroes)
