May 31 -- Union Communications Services, Inc.
The Johnstown Flood. More than 2,200 die when a dam holding back a private resort lake burst upstream of Johnstown, Pennsylvania. The resort was owned by wealthy industrialists including Andrew Carnegie and Henry Clay Frick. Neither they nor any other members of the South Fork Fishing and Hunting Club were found guilty of fault, despite the fact the group had created the lake out of an abandoned reservoir – 1889
Some 25,000 white autoworkers walk off the job at a Detroit Packard Motor Car Co. plant, heavily involved in wartime production, when three black workers are promoted to work on a previously all-white assembly line. The black workers were relocated and the whites returned - 1943
Rose Will Monroe, popularly known as Rosie the Riveter, dies in Clarksville, Ind. During WWII she helped bring women into the labor force - 1997