48 books • 5 series
Black Balled
The Day After Tomorrow
The Yesterday Menace
The World-Shakers
Infernal Machine
The Secret of the Suicidal Sparrow
Under Worlds Collide
Net Prophet
The Next Generation, part 2
The Next Generation, Part 1
The Sixth Men
Split Decision (Heritage Universe, #102)
Inner Space (Heritage Universe, #101)
2020 The New Round Table
Toy Soldiers (Heritage Universe, #200)
Peek-a-Boo (Heritage, #2000)
War! (Heritage Universe, #204)
Duck Duck Goose (Heritage, #203)
Hide and Seek (Heritage Universe, #201)
The Gates of Heaven
A Good Man Returns
Millennium Bug
Four in the Way
Three on a Match