Resources: Products and Services: Mailing Labels Mailing Labels SIOR Membership Mailing Labels   (adhesive format in zip order) are available for purchase.   The SIOR mailing labels include approximately 2,200 current addressees in North America and 100 addressees abroad.  COST: $50 for Members/Candidates $295 for Non-Members SIOR does not make electronic lists available to non-members.  Members may download a variety of electronic mailing lists in the SIOR Members Only section of this site (requires username and password).