The 1930 U.S. Federal Census was made available to the public on 1 April 2002.|
1930 Census: Online Indexes and Records...
What's in the Census? Basic Information Given in the US Census Records 1790-1940
1930 Census Resources...
US Population in the 1930 Census by Race
1930 Census Questionnaire (blank form)
1930 Census Occupation Codes