Today's Post (and the Express) had a cute photograph by Sarah L. Voisin of the children of the Fine family dressed as Superman and Flash Gordon. The caption said they were "preparing to see a Superman exhibit at the National Museum of American History on Sunday, but they missed it." As far as I recall the last Superman exhibit was for his 50th birthday in 1988 which means they missed it by quite a lot. -17 years in the case of the older boy.
Unfortunately the image isn't online.