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Stuffed Animal Husbandry: Christopher Robin's Toys Winnie-the-Pooh, Eeyore, Kanga, Piglet and Tigger, the real stuffed toys owned by Christopher Robin Milne, have been on display in the New York Public Library since 1987.
A post on the NYPL site tells us a little bit about what is involved in conserving the toys:

Thanks Bruce!
Posted by The Nag at 8/06/2017 Niagara on the Lake, Ontario, Canada
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Marilyn Bellamy