When Art Mellor (S.B. 1985) was diagnosed with multiple sclerosis, he formed the Boston Cure Project to coordinate the research being done on M.S. A benefit concert for the foundation will be held on Sunday, Oct. 23, at the Pleasant Street Congregational Church at 75 Pleasant St. in Arlington at 3 p.m. Marion Leeds Carroll, a web assistant with the MIT Libraries, is organizing the concert and is one of the featured performers. She was diagnosed with M.S. in 1988. Tickets are $20 in advance and $25 at the door; $5 for students and seniors. For more information or to order tickets, call Ruth Seidman at (617) 734-7820 or e-mail SingtoCureMStix@hotmail.com.