There are several ways to contact Katherine, depending on the type of your inquiry. Listed below are the various contacts.
Fan mail, questions and just saying hello, please write to:
c/o Harper Collins Publishing
New York, NY 10007
For inquiries related to optioning Katherine’s books for film, please contact Katherine’s agent.
The Gersh Agency
Attn. Allison Cohen
41 Madison Avenue
New York, NY 10010