The U.S. Census reports there are 2.1 million children under 18 who are multiracial and probably many more who are not reported that way. There is also an increase in multiracial families. Here are some resources for dads that provide both support and advice:
Association of Multiethnic Americans – www.ameasite.org
Interracial Voice (while much of the site is dated, it also lists multiracial support groups across the United States) – www.webcom.com/intvoice/
Mavin Foundation (publisher of Mavin, a magazine on experiences of multiracial people, transracial adoptees, and multiracial families) – www.mavinfoundation.org
Pact – Provides advice to adoptive parents raising children of color – www.pactadopt.org
National Advocacy for the Multi-Ethnic (a blog on the multiethnic experience, news, and data) http://www.namecentral.org/