and owen d. young, the other great collector, who was "time" man of the year, 1929. founder of general electric -- rca, rather. so these performance copies came from their collections. this particular one, i believe, came from howe. i believe it's the howe collection. >> host: one more. >> guest: but i do want to mention one thing. this belonged to dickens too. here is his pen, which you may want to hold, and that's his ink well. and this is his ivory letter opener which was given to him by his sister, georgina hogarth, and she had it inscribed or engraved, c.d., he always put that in everything, in memory of bob, 1862. and this was one of the forepaws of his recently-deceased cat, bob. and the story has it that dickens had trained bob to put out his night candle with his paw. >> host: not to be terribly accuracy, but how much is this all worth? >> guest: we don't like to discuss prices. in one sense, it's invaluable. i don't like to think of this in terms of value because these are priceless objects. certainly the manuscripts, i suppose, one could find another lette