The New Deal Was a Failure: Interview with Dr. Santos, archived in the Library of Congress
Disagreeing with the New Deal: Library of Congress, interview with a knife maker reading from a newspaper
1940 Census: Search statistics from the 1940 Census
It's a bit complex, but you can find help on the site with suggestions for how to search the information
Compensation from Before World War I through the Great Depression: article about wages from the Department of Labor ( this is a download--it will not open another website)