Source File URL: www.irs.gov/file_source/pub/irs-soi/eo_ar.csv
Source Page: https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf
NBER URL: http://www.nber.org/data/soi-tax-stats-exempt-organizations-business-master-file-form-990.html
eobmf201805ar set up by Jean Roth , jroth@nber.org , 15 May 2018