Roper Center for Public Opinion Research
The Roper Center for Public Opinion Research, established in 1947 by Elmo Roper is "the leading educational facility in the field of public opinion [and] exists to promote the intelligent, responsible and imaginative use of public opinion in addressing the problems faced by Americans and citizens of other nations." It currently maintains the world's largest archive of survey data which is made available to "academic and policy researchers, the press, business, and others who are interested in poll findings." It is a non-profit, non-partisan organization. The center also provides training for students in survey research and public opinion.