For those interested in the Division Mythos, here is a rundown of the novels (in their groups) plus tie-in novellas and short stories. You can read them in any order, but once they're all completed, they will create a massive story (about 800,000 words) and are best read as follows…
1. Before Leonora Wakes (Big novella. Red Piccirilli Book #1. Self-published)
2. Within This Garden Weeping (Big novella. Red Piccirilli Book #2. Under consideration with Chizine right now)
3. Collected Songs of Sonnelion (Novel. Red Piccirilli Book #3. Current Project)
4. Nursery Rhymes 4 Dead Children (Division Novel #1, Delirium Books, May 2011)
5. Iron Butterflies Rust (Frank Gunn novella #1, Delirium Books, August 2011)
6. As I Embrace My Jagged Edges (Sideshow Press, Digital 2011/ Hardcover 2012)
7. The Dampness of Mourning (Division novel #2, DarkFuse, February 2012)
8. Down Here in the Dark (Frank Gunn novella #2, Delirium Books, April 2012)
9. The Patron Saint of Infinite Sorrow (Division novel #3)
10. She Collects Grave Nectar (Michael Johnston novella)
11. Proserpine's Story (Ravaged Gods novel #1)
12. Lord of the Damaged (Ravaged Gods novel #2)
13. Violent Races (Ravaged Gods novel #3)
Tie-in Short stories:
1. Crooked Stick Figures (Delirium Books, 2011)
2. Beneath the Weeping Willow (Shock Totem #4, 2011)
3. The Weight of All These Years (Literary Mayhem, 2011)
4. Fiddler on the Green (only in As I Embrace My Jagged Edges deluxe hardcover)
5. Daddy Screamed With Us (Darkside Digital, 2011)
6. The River
7. Now I Play Happy Songs and Children Dance
8. The Cries of the Hungry
So what exactly do you mean by "division" mythos? Is "division" the name of a town or some sort of supernatural entity?
So far I have only read #4 and 5 off of the list and have very much enjoyed what I have read.