Contact Us CONTACT US Correspondence: Delta Sigma Theta Sorority, Inc.P.O. Box 7496Philadelphia, PA 19101-7496 president@phillyalumnae-dst.org Financial Matters:Delta Sigma Theta Sorority, Inc.P.O. Box 2356Bala Cynwyd, PA 19004Financial-sec@phillyalumnae-dst.org Webmistress: tech-team@phillyalumnae-dst.org