the latest exhibit, "digging up the past: a history of the schomburg center," marks its 90th anniversary. and joining us today is dr. khalil gibran muhammad, the director of the schomburg. so nice to see you again. >> thank you so much for having me. >> so tell us about this -- this newest exhibit. it's sort of a continuation of so every now and then we have founder -- arturo alfonso schomburg, an afro-puerto rican, arrives in new york in 1891. this year happened to be extra special because it is our 90th anniversary. people often forget, too, that our 90th is also the 90th of the annual celebration of black history -- began in 1926 under the leadership of carter g. woodson. so for us being able to tell our origin story, to look at some of the early artifacts and books that arturo schomburg collected is a special occasion to really exist? why is cultural preservation so important?" >> well, honestly, i think that's a question that -- if you live in america that we're still -- we're still asking on a lot of levels. >> right. >> so, tell people why it is so important that -- that a -- at a