Knickerbocker Theater in the aftermath of the roof collapse on January 28, 1922. Back to Adams Morgan 1922: Washington's Deadliest Blizzard Washington DC by Patrick Kiger When heavy snow caused an Adams Morgan theater's roof to collapse, 98 moviegoers were killed in one of the District's worst disasters ever. View full article on Boundary Stones Last Updated: March 10, 2023 Share Facebook Twitter LinkedIn