Yale undergraduates are sponsoring a blood drive that will be held Monday-Friday, Sept. 30-Oct. 4, at St. Mary's Church, 5 Hillhouse Ave. Donations will be accepted noon-4:45 p.m. on Monday and Wednesday-Friday, and 9 a.m.-1:45 p.m. on Tuesday. Appointments are recommended, but walk-ins will be welcome if space is available. To make an appointment, call Benjamin Oshrin, undergraduate blood drive coordinator, at 436-1501 or contact him via email at benjamin.oshrin@yale.edu.