here are a couple of resources: do you have others you’d recommend?
Wages in the Nonprofit Sector Bureau of Labor Statistics http://www.bls.gov/opub/cwc/cm20081022ar01p1.htm
from the Urban Institute
The Nonprofit Sector in Brief Facts and Figures from the Nonprofit Almanac 2007 http://www.urban.org/UploadedPDF/311373_nonprofit_sector.pdf
