This document announces a Women's Herstory Editathon event to be held on Tuesday, March 29 from 12:30 p.m. to 2 p.m. in Room 2108 of the Henry Madden Library at California State University, Fresno. Librarians will provide training and resources to help contributors add and improve Wikipedia entries about women in history. Light refreshments will be served and attendees should bring their own laptops. The event is free and open to the public in partnership with the Cross Cultural Gender Center, though parking is restricted. Contact information is provided for those seeking event or accessibility details.