The cooking school papers and photographs include lesson plans, photographs, and documents from cooking courses organized by Nat Hart from 1970 to 1992. Materials document courses taught at Nat Hart's Gourmet Cooking School, a culinary school owned and operated by Nat and Sylvia Hart in Las Vegas, Nevada in the 1980s. Also included are materials from classes taught at Caesars Palace, Caesars Boardwalk Regency, and the Desert Inn.

Nat Hart's recipes are comprised of food recipe cards, recipe collections, and recipes clipped from print material collected by Hart from 1970 to 1994.

The artifacts series contains certificates and awards presented to Nat Hart, framed photographs of Hart, and various objects reflecting his work in the food and beverage industry such as Hart's Caesars Palace chef's jacket.

Nat Hart's professional papers are comprised of records, designs, and photographs relating to his career in the Las Vegas, Nevada and Atlantic City, New Jersey casino industry as a food and beverage executive from 1945 to 1996. The series contains documents from his employment with Caesars World, Desert Inn, and as a freelance consultant. Also included are architectural drawings and designs, records from the Nat Hart Cooking School, recipes, documents from professional groups, articles about the hospitality industry, and artifacts from his career.

Nat Hart's professional membership papers and photographs contain correspondence, documents, and photographs from his activity in professional organizations from 1976 to 1993. Hart was a member of the National Restaurant Association, the Food and Beverage Directors Association, and Confrerie de la Chaine des Rotisseurs, Las Vegas Chapter.