The Michael S. Mack papers (approximately 1940s-1950s, undated) consist of photographs and documents related to the early Jewish community of Las Vegas, Nevada. Group photographs depict the Mack family and the Las Vegas Jewish community at events during the 1940s and 1950s, when the Las Vegas Jewish Community Center was the main Jewish organization in town. Individuals in the photographs were identified by Michael Mack. The collection includes documents written by Michael Mack that describe the early Las Vegas Jewish community and the history of his father and uncles, Louis, Nathan, and Harry Mack. The documents also list the names of Jewish individuals and businesses in Las Vegas.

Materials in this collection (1969-1989) document various endeavors of the Operation Life organization. They include original correspondence, meeting minutes, news clippings, medical programs, grant applications, legal and financial documents, brochures and pamphlets, and other materials that provide context on the kinds of services provided by Operation Life. These files were kept by Jack Anderson in the course of his work as attorney for Operation Life.