Gladys Warren founded the Hollis Local Development Corporation, in 1979. Hollis LDC is a civic group aiming to preserve small businesses on Hollis Avenue, prevent residential overdevelopment, and combat crime in the neighborhood.
"Gladys Warren Triangle," New York City Department of Parks & Recreation, accessed January 17, 2024, https://www.nycgovparks.org/parks/gladys-warren-triangle/history