You may contact the author of Sue Center in these ways:
Jon Bjornstad
728 Hopkins Avenue
Redwood City, CA 94063
415-246-6499
jon at suecenter.org (email address written unspammably)
I look forward to hearing from you.
You can also put your comments in this form:
Finally, there is a newsletter for those interested in Sue Center.
I will keep you informed of what is happening.