On the United States' census form, American citizens are told they may list any ethnic ancestries with which they identify, but are instructed to "mark one only" in the question on race. Joel Perlmann asserts that it is in the public interest to allow people to declare themselves as having...

New data from the IPUMS (Integrated Public Use Microdata Series) project permit an exploration of the demographic basis for ethnic survival across successive generations. I first explore the degree of ethnic blending among the grandchildren of early- to mid-19thcentury German immigrants; second,...