Genetics Resources on the Web is at www.geneticsresources.org, and is maintained by the National Coalition for Health Professional Education in Genetics (NCHPEG), based in Maryland. It is aimed at health professionals and the public and aims to provide high quality information related to human genetics.
It was mentioned in:
Guttmacher AE, Porteous ME, McInerney JD. Educating health-care professionals about genetics and genomics. Nature Reviews Genetics 2006; 8: 151-7
which also talks about OMIM and Entrez Gene.