The Helen Heller Agency, a literary agency.
http://www.helenhelleragency.com
The Bantam Dell Publishing Group
http://www.randomhouse.com/bantamdell
Orion Publishing Group
http://www.orionbooks.co.uk
International Thriller Writers
http://www.thrillerwriters.org
For readers in Canada, here are several ways you can find my books.
http://randomhouse.ca/catalog