Libraries' summer hours until September 7 are:
Administrative offices -- Monday to Friday: 9am-5pm; Saturday and Sunday: closed.
Aero/Astro -- Monday to Friday: 9am-5pm; Saturday and Sunday: closed.
Barker -- Monday to Thursday: 9am-8pm; Fri: 9am-6pm; Saturday: 11am-6pm; Sunday: 1-8pm.
Computerized Literature Search Service -- Monday to Friday: 10am-6pm; Saturday and Sunday: closed.
Dewey -- Monday to Thursday: 9am-8pm; Fri: 9am-6pm; Saturday: 11am-6pm; Sunday: 1-8pm.
Document Services -- Monday to Friday: 9am-5pm; Saturday and Sunday: closed.
Humanities -- Monday to Friday: 7am-midnight; Saturday: 8am-midnight; Sunday: 10am-midnight.
Institute Archives -- Monday to Friday: 11am-4:30pm; Saturday and Sunday: closed. Other hours available by appointment.
Lewis Music -- Monday to Friday: 10am-6pm; Saturday and Sunday: closed.
Lindgren -- Monday to Friday: 9am-5pm; Saturday and Sunday: 1-5pm.
Reserve Book Room -- Monday to Friday: 9am-5pm; Saturday and Sunday: closed.
RetroSpective Collection -- Monday to Friday: 9am-5pm; Saturday and Sunday: closed.
Rotch -- Monday to Thursday: 9am-8pm; Friday: 9am-6pm; Saturday and Sunday: closed.
Rotch Visual Collections -- Monday to Friday: 9am-5pm; Saturday and Sunday: closed.
Schering-Plough -- Monday to Friday: 9am-5pm; Saturday and Sunday: closed.
Science -- Monday to Friday: 7am-midnight; Saturday: 8am-midnight; Sunday: 10am-midnight.
A version of this article appeared in the June 2, 1999 issue of MIT Tech Talk (Volume 43, Number 32).