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DBHM regrets abbreviating its hours of operation effectively from January 2, 2024, to Monday, April 29, 2024. You can still visit the museum during this period but "By Appointment Only." To schedule an appointment, individuals can call 301.797.5019 and leave a message. The museum staff will return the call to arrange the appointment and add it to the calendar. It's important to note that group visits are restricted to six people who can be in the gallery at a time. Visitors should plan accordingly and comply with the museum's mask requirement during this period.