FROSTBURG - Mr. and Mrs. Leslie Joseph Sipple, Bowery Street, celebrated their 25th wedding anniversary recently with a trip to Niagara Falls and Toronto, Canada.The couple was married June 13, 1964, at Frostburg United Methodist Church. Tne Rev. Denauth Blanton was the officiating clergyman.Mrs. Sipple, the former Diana Twigg, Is the daughter of William A. Twigg, Frostburg, and the late Leona M. Twigg. She is employed at Frostburg State University. Mr. Sipple is the son of Mrs. Pearl Sipple, Meyersdale, Pa., and the late William Dale Sipple. He is employed at Sell and Company.Mr. and Mrs. Sipple are the parents of one daughter, Mrs. Sherry Lynn Finzel, Frostburg.