Peter S. Larson, 64, of Winchester, passed away June 4, 2013. He was the beloved son of Jane D. and the late Conrad S. Larson of Winchester. He was also the dear brother of Liz Mantica of Woburn, Kathi Gray Whittier of Melrose and Dave R. Larson of Maine, and is further survived by several nieces, nephews, cousins and many dear friends at 3M, where he worked for 38 years. A Memorial Gathering will be held at the Costello Funeral Home, 177 Washington St., Winchester, on Thurs., June 13 from 6-8PM, with a Service of Remembrance at 7:30PM. Relatives and friends are kindly invited. Interment is private. If desired, donations in Peter’s memory may be made to the charity of your choice.