#1 of 3 in Illuminatus!

#3 of 6 in Ender's Saga

#2 of 3 in Illuminatus!

#3 of 3 in Illuminatus!

#2 of 8 in Harry Potter

Ender's Saga (Graphic Novels)

#4 of 6 in The Twilight Saga

#1 of 3 in Voice from the Edge

#6 of 8 in Harry Potter

#5 of 8 in Harry Potter

#2 of 8 in Dune

#1 of 3 in Time Patrol

#1 of 3 in Victim

#4 of 8 in Dune

#2 of 3 in Roger Zelazny's Alien Speedway

#3 of 8 in Dune

#1 of 2 in Jurassic Park

#2 of 6 in The Hitchhiker's Guide to the Galaxy

#2 of 3 in Dirk Gently

#4 of 8 in Harry Potter

Middle-earth Legendarium

#7 of 8 in Harry Potter

#1 of 4 in The Baroque Cycle

#3 of 4 in Saga of the Well World

#2 of 3 in The Lord of the Rings

Heinlein's Juveniles

4 Freakonomics

#2 of 4 in The Baroque Cycle

#2 of 3 in Green Town

#1 of 1 in The Stand (3 volumes)

#3 of 8 in Harry Potter

#3 of 6 in The Hitchhiker's Guide to the Galaxy

#1 of 4 in Space Odyssey

#4 of 6 in The Hitchhiker's Guide to the Galaxy

#3 of 3 in Bridge

#2 of 3 in Victim

#1 of 10 in Barsoom

#2 of 7 in Foundation (Publication Order)

#3 of 6 in The Twilight Saga

#2 of 6 in Heechee Saga

#4 of 5 in The Shadow Series

#1 of 8 in Harry Potter

#6 of 3 in Darkover Omnibus

#0 in Big Finish Bonus Releases

#2 of 4 in Robot

#1 of 3 in Dragonriders of Pern

#3 of 4 in The World As Myth

#1 of 3 in Sprawl

#1 of 8 in Dune

#1 of 4 in Robot

#7 of 10 in Barsoom

#1 of 6 in The Twilight Saga

#3 of 4 in Robot

#2 of 2 in American Gods

#1 of 3 in Blue Ant

#5 of 18 in Enderverse: Publication Order

#3 of 3 in The Way

#1 of 6 in Lucky Starr