The Herman M. Slatis papers contain correspondence written by Slatis to various people during his time at Michigan State University. The majority of the letters are to Alexander Sokoloff about his work with the Tribolium confusum, or confused floor beetle. Sokoloff was a faculty member at the Department of Genetics at the University of California in Berkeley, California. The letters include notes on his work with the beetles and also include personal correspondence between the two men.