Pew Research Center, “How Americans Encounter, Recall and Act Upon Digital News”

Pew Research Center, “Many Americans Believe Fake News Is Sowing Confusion”

PolitiFact, 202-463-0571, staff and emails

The Washington Post “Fact Checker,” Glenn Kessler, @GlennKesslerWP, contact form

FactCheck.org, Annenberg Public Policy Center, Editor@FactCheck.org, (215) 573-7070