This could be a simple request, or a complicated one... I am looking to establish the date when African tribal art (but specifically masks) was first put on public display in America. I know that American museums had collections of African art from at least the nineteenth century, but my understanding is that these were not put on display until later? I cannot offer much for your help, save, perhaps, a gushing footnote in my book!
This wooden mask, in the @metmuseum collection, was made by the Yoruba of Nigeria.