150 Years of American Occupations...
Image: Job Voyager Job Voyager is a set of inte... ...om 1850-2000. It was made by Jeffrey Heer of the University of California at Berkeley from data collected by... ...California at Berkeley from data collected by the University of Minnesota 's Population Center using th...
https://www.neatorama.com/2009/09/21/150-years-of-american-occupations/
