There are 5 books by James D. Denney on BookOrb. A strong starting point is Doorway to doom (2002). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has James D. Denney written?
BookOrb lists 5 books by James D. Denney.
Where should I start with James D. Denney?
A good starting point is Doorway to doom (2002).
What is the James D. Denney books in order list?
In publication order: 1. Mr. Littlejohn's secrets to a lifetime of success (2000), 2. Doorway to doom (2002), 3. Battle before time (2002), 4. Lost in Cydonia (Timebenders) (2002), 5. The Difference You Make: Changing Your World through the Impact of Your Influence (2013).