1989 he founded Pacific Management Inc., from which he is now retired. In addition to these business ventures, Cellini took an active role in commercial product design by inventing and patenting two types of Shower Enlarger curtain rods which maximize bathtub showering space and are currently used in many hotels across the United States. From 1973 to 2010, Cellini served as the executive director of the Illinois Asphalt Pavement Association, the Illinois Association of Wastewater Agencies, the Illinois Concrete Pipe Association and, he held a membership position in the PCI of Illinois and Wisconsin. He has since retired from all of these entities. Argosy Gaming In 1990, Cellini and group of ten entrepreneurs created Metro Entertainment and Tourism to obtain the first casino license in Illinois. The group was successful in winning the license and went on to create the Alton Riverboat Gambling Partnership in Alton, Illinois. This partnership included tennis star Jimmy Connors. After an extensive government vetting and qualifying process, Cellini became the co-founder of Argosy Gaming Company in 1999, a New York Stock Exchange traded entity. The company's first gambling license cost the company $85,000 but later blossomed into a value of $500 million with six casinos. Commonwealth Realty Advisors In 1989, William Cellini and Earl Deutsch founded Commonwealth Realty Advisors (CRA). The firm was a highly successful real-estate investment company focused on asset management of commercial real estate. Its clients included union and public pension funds and its most successful client was the Teachers Retirement System of Illinois (TRS). According to numbers confirmed by TRS, the retirement system earned a 14.38% return during CRA's 17 year management. So successful was their management of assets that the executive director of TRS publicly commended CRA's performance as one of the pension fund's top-performing real-estate managers. CRA earned double-digit returns for teachers' system over a period of 17 years and grew to manage approximately $2 billion in gross assets before its closure in 2009. In the fall of 2006, TRS said that Commonwealth was one of the system's biggest moneymakers, earning the pension fund about 20 percent over the previous five years. "They have made a ton of money for us," TRS executive director Jon Bauman told The State Journal-Register at the time. "They're probably our top-performing real-estate manager." CRA earned double-digit returns for the system and grew to manage approximately $2 billion in gross assets before its closure