Repeats every week every Friday until Fri May 26 2017 .
Presented by: Houghton Library Admission: Tours are free and open to all. Reservations for individuals are not required, but advance notice of smaller groups is appreciated. Exhibitions at Houghton Library are free and open to the public – no Harvard ID is necessary to view the exhibitions. Houghton Library hours: Monday, Friday, Saturday: 9 AM-5 PM; Tuesday, Wednesday, Thursday: 9 AM-7 PM Read more about Tour of Houghton Library