The Sam Siegel Professional Papers date from 1958 to 1968 and contain the corporate records of Siegel's Clark Dade Investment Enterprises, Inc., a Las Vegas-based small business. Materials include a corporate record book listing names of stockholders/subscribers, correspondence regarding business transactions, a book of blank stock certificates, and black-and-white photographic prints of Siegel with Jayne Mansfield. One of these prints is signed by Jayne Mansfield.