http://tags.library.upenn.edu/tag/census+ethnicity PennTags Feed http://tags.library.upenn.edu/makerecord/url/5702 http://tags.library.upenn.edu/makerecord/url/5702 Instructions on finding Ancestry Data through the US Census.<br /> http://tags.library.upenn.edu/makerecord/url/5701 http://tags.library.upenn.edu/makerecord/url/5701 Description of the rules and definitions for defining race on the census.<br />