You can reach David at:
dweiden (at) hotmail (dot) com
Literary representation:
Michelle Brower of Aevitas Creative Management.
mbrower (at) aevitascreative (dot) com
Publicity requests:
Sonya Cheuse, sonya.cheuse (at) harpercollins (dot) com
Film and television representation:
Kristina Moore and Ryan Wilson of Anonymous Content.
kmoore (at) anonymouscontent (dot) com
rwilson (at) anonymouscontent (dot) com