http://www.thetribunepapers.com/2019/01/21/hillarys-dark-money-group-relies-heavily-on-six-donors-and-campaign-money/
Link to tax return for Onward Together campaign:
https://freebeacon.com/wp-content/uploads/2019/01/Onward-Together-990-Return-of-Organization-Exempt-From-Income-Tax-Taxpayer-Copy-for-Public-Inspection.pdf