#2 of 3 in Island in the Sea of Time
Planned book #5 of 17 in The System Apocalypse
#1 of 3 in The Locked Tomb
#2 of 3 in The Locked Tomb
#1 of 3 in Island in the Sea of Time
#1 of 7 in Saga of the Well World
#3 of 3 in Island in the Sea of Time
#2 of 9 in The System Apocalypse
#1 of 3 in The Last Horizon
#3 of 9 in The System Apocalypse
#1-3 of 9 in The System Apocalypse
Planned book #6 of 17 in The System Apocalypse