Where can I find a U.S. map showing the immigration of people coming into the U.

Question:

Where can I find a U.S. map showing the immigration of people coming into the U.S. from the 16-1900's?

I once saw a color coded map that showed the germans coming in and what state they immigrated to, along with the French, Italian, and others. It showed with arrows where most groups went. I've not been able to find this map since, and I really want to.

Best Answer - Chosen by Asker: http://www.valpo.edu/geomet/geo/courses/...
untold treasures of the census bureau.