Contact Us

OSSD Central Office

Marianne Van Wagner Executive Director		Dawn Stafford Events & Marketing Manager

Tel.:  +01 830-796-9393
Toll-Free from within US: 1-866-377-4416
Fax:  +01 830-796-9394
Email:  [email protected]

For payments via check: 

Please make check payable to 'Organization for the Study of Sex Differences' addressed to:

OSSD Central Office
Attn: Marianne Van Wagner, Exec. Dir.
1123 Comanche Path
Bandera, TX 78003

NOTE: All checks must be made in United States dollars (USD). Checks written in other currencies will not be accepted.

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