The history of the company known as National Gypsum begins in 1925 when Joseph F. Haggerty, Clarence E. Williams, and Melvin H. Baker formed a company to produce and sell a new, lighter weight gypsum board they sold with the Gold Bond guarantee. The company was eventually listed on the New York Stock Exchange and, for many years, was one of the Fortune 500.

In 1993, the company was reorganized, and a new company, New NGC, Inc., acquired the National Gypsum name and substantially all of its assets. In 1995, the company was purchased by the C.D. Spangler, Jr. Family (Delcor, Inc.).

William (Bill) Mitchell, who retired from the company in 1988 as CEO of Binning's Building Products, was interviewed by Nancy Spurlock.

"I was hired after the War in 1948 and worked in Manufacturing at the corporate office. I worked as the relief foreman on the 11-7 shift at the Clarence Center plant. The next year, I was asked to do the same thing at the company's Kalamazoo paper plant. That's how I learned the business. I had worked for the company about six weeks and had not been paid. Someone had neglected to put me on the payroll."

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