A convenient registration form is found on the home page. A response to your registration will explain how to pay dues by check.
You can pay membership dues by check or on the SSS website.
Q: What are the membership categories?
A: Regular, student, joint, and lifetime
Q: Does country of residence matter?
A: No. Membership dues are the same, regardless of where you live.
Q: Can I sponsor a member?
A: Yes, you can register another person.