Penn National was founded in 1968 by T.K. Nitterhouse and a group of local investors and was the first 18-hole golf course in Franklin County, Pennsylvania. The owners formed White Rock, Incorporated, and with the opening of the golf course, T.K. began his vision of a master-planned community. Today, Penn National boasts two 36-hole nationally recognized championship golf courses and a thriving community of over 1,000 families, encompassing over 1,500 acres.

T.K. is a business legend in Franklin County, where his success can be credited largely to hard work, good instincts, a positive attitude, and confidence in himself and what he built. He said, "People have complimented me on the great vision that I have. People ask me what's next. What will I do next? It's not about tomorrow. It's about today. Plans for tomorrow happen today."

In 1995, T.K. retired, leaving the business in the capable hands of his son-in-law, Dennis Zimmerman, and daughter, Patti, who continue to work on building T.K.'s dream (he passed away in February 2003). "T.K. was a visionary leader who left the world a better place, and also left a legacy that Patti and I are proud and committed to continue", says Dennis, President of White Rock, Inc. Dennis and Patti reside in the Penn National community with their two children, Ted and Honor.