I dislike Diamond Comics Distributors intensely and resent Steve Geppi's wealth but his his comics collection is of course amazing and is now a museum. Probably the only place many of us will ever see some of the items in Geppi's Wimbledon-Green-like hoard.
Great photo of the Superman Daily Planet display, marred by some bozos head:
http://www.icv2.com/articles/images/news/15841.html