Best Resources for Researching Nonprofits

GuideStar
Register for free access to view IRS Form 990 financials & other information for most U.S. nonprofits.

Charity Navigator
View their ratings & comparisons of organizations but be sure to check their methodology

Give.org National Charity Reports
Reports on 50 national organizations

Factiva
Search for articles in 12,000 publications. 
Search example:  newman's own and atleast5 newman*

LexisNexis Academic
Use the Guided News Search for articles in other newspapers.  Search example: (newman's own) in Headline, Lead Paragraph AND atleast5(newman!)  in Article Text.

Nonprofit Organizations Research Guide
Information and resources on how to evaluate a nonprofit and benchmark with other metrics.