10 books • 9 series
Amazon (Tech Titans)
John F. Kennedy's Assassination Rocks America (Events That Changed America)
Hidden Heroes (Set) (Hidden Heroes)
Women with Wings: Women Pilots of World War II (Hidden Heroes)
Harlem Hellfighters (Essential Library of World War I)
History of Music (Essential Library of Cultural History) (Essentiallibrary of Cultural History)
Digging Up the Past (Digging Up the Past)
King Tut's Tomb (Digging Up the Past)
Korean War (Essential Library of American Wars)