A.S.L. Tours and C.A.R.T.
American Sign Language (A.S.L.) tours are the best way to provide accommodations for d/Deaf visitors. Guides will act as docents, using A.S.L. rather than English to talk about your collections. The Art Institute of Chicago, for example, offers A.S.L. tours in which the docents are Deaf and use sign language, with translators translating for hearing visitors on the tours.
C.A.R.T., or Communication Access Realtime Translation, can also be used at events your institution holds. C.A.R.T. involves a translator typing all dialogue that is projected onto a screen. This can be read by d/Deaf guests or guests with hearing loss and allow them to fully participate in the event.