Accounting firm Whitlock, Selim & Keehn LLP is fresh off its first merger in its 22-year history.The firm Patricia S. Stoner CPA PC merged with WSK in January, as owner Patti Stoner became WSK’s sixth partner.Stoner, a certified public accountant, had owned a practice in Springfield since 1986. Her staff accountant, Judy Gann, also joined WSK in the merger, which adds 432 clients to WSK’s roster of 1,700 clients.“I wanted to focus on the client work, and I found that an awful lot of my time was spent on the administrative hassles,” Stoner said.