From Diversifying Economic Quality: A Wiki for Instructors and Departments
Collect sources pertaining to more race/gender but especially race.
http://www.aeaweb.org/committees/CSMGEP/statistics/
http://pubs.aeaweb.org/doi/pdfplus/10.1257/aer.99.2.700
http://pubs.aeaweb.org/doi/pdfplus/10.1257/aer.100.2.704
http://www.nber.org/~sewp/events/2004.05.28/ginther_%20kahn_WomenAndEconomics.pdf
http://class.csueastbay.edu/faculty/mmichelson/leaky%20pipeline.pdf
Economics vs Political Science & Public Administration (by race)
Economics vs Political Science & Public Administration (by gender)
Bachelors to PHD - show leaky pipeline (Line chart)
Add third with Science and Engineering comparing Econ
http://www.aps.org/programs/education/undergrad/faculty/statistics/womenstem.cfm
CSWEP is for women
CSMEGEP
Search econ lit concerning participation rates. (Siegrfried, ect.) Find what others have said about the data/summary of what they have written on the topic.