Headline: Gun owners should prove mental healthPublication Date: Wednesday, March 27, 2013Primary Source: Contra Costa Times (CA)Non-Cato Author: Will EmesType: letterFormat: Newspaper (Online)Nature of Mention: mentionedScholar: CatoResearch Area: Law and Civil LibertiesSubjects: gun controlAttached Files: Contra Costa times (CA) - Cato_1.pdf