Hours and Admission

Regular Building Hours

Please take note of upcoming closures below.

Exhibition galleries

Monday, and Wednesday through Friday, from 10:00 AM to 4:45 PM
Tuesday from 10:00 AM to 7:45 PM (galleries open at 12:00 PM the second Tuesday of the month)
Saturday from 10:00 AM to 3:00 PM

Please note that the last admission for exhibition visitors will be 45 minutes prior to closing.

Library

Monday, and Wednesday through Friday, from 9:30 AM to 4:45 PM
Tuesday from 9:30 AM to 7:45 PM (the library opens at 12:00 PM the second Tuesday of the month)
Saturday from 10:00 AM to 3:00 PM

Staff retrieves materials up to 45 minutes before the library closes. Reading room closes 15 minutes before the library.

An advance appointment is strongly encouraged for all researchers. Please log-in to your Portal1791 account to select your preferred visit dates.

Upcoming Closures

• The Library and galleries close at 4:00PM on Tuesday, 11 March.
• The Library closes early at 2:00PM on Friday, 14 March.
• The Library closes early at 4:00PM on Thursday, 20 March. 
• The Library closes early at 4:00PM on Thursday, 27 March. 
• The MHS is closed Monday, 21 April, in observance of Patriots' Day.
• The MHS is closed Saturday, 24 May through Monday, 26 May, in observance of Memorial Day.
• The MHS is closed Thursday, June 19, in observance of Juneteenth. 
• The MHS is closed Friday, July 4 through Saturday, July 5 for Independence Day weekend. 
• The MHS is closed Saturday, 30 August through Monday, 1 September, in observance of Labor Day. 

Admission

The MHS is free and open to the public. All ages are welcome in the galleries; library readers must be at least 16 years of age or accompanied by an adult.

The MHS is located in a Nationally Registered Landmark building. It is equipped with a wheelchair ramp, interior ramps, and elevator that allow visitors with mobility impairments access to our reading room, exhibition galleries, and other public meeting spaces.