The Willi Hennig Society is a registered 501(c)3 not-for-profit organization incorporated in the District of Columbia with its business office registered in the state of New York.
The Willi Hennig Society
c/o Dr. Torsten Dikow, Secretary
Department of Entomology
National Museum of Natural History
PO Box 37012, MRC 169
Washington, DC 20013-7012
Tel.: +1 202 633 1005