If you need a referral you can contact the following people in the states listed below.

Arizona: Boris Gindis
Northern California: Amy Klatzkin
Southern California: Thalians Mental Health Center, Cedars-Sinai Hospital, (310)-423-3500
Connecticut: Gayle Canzano, Ph.D.
Colorado: Dr. Theodore Gaensbauer
Massachusetts: Katie Jae Naftzger
New York: Boris Gindis
Washington (state): Laura Stone
Washington D.C./Virginia: Ron Federici

Other ways to search for therapists:

Psychology Today’s on-line referral list (by state)
University psychology departments
Play therapy association (state)
Child therapy association (state)