I know of a couple of Swedish museums/institutions which do it. Either manually or bed on which pages/images contains links pointing back to specific items in their collections. Essentially they use it as a "you might also be interested in" suggestion.

Also know that a few of their authority files includes wikipedia links as "same_as" properties.

/André

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André Costa
GLAM-tekniker
Wikimedia Sverige

Den 27 sep 2013 08:43 skrev "John Erling Blad" <jeblad@gmail.com>:
It seems like some GLAM institutions are starting to use URLs to
Wikipedia articles as common identifiers for classes of items in
collections. I guess this will change over time to be  URLs to
Wikidata instead. This is pretty much as expected, but it is although
a bit strange that they are using Wikipedia and that no-one seems to
have noticed this from our side.

Is there anyone that know how common this is? Så far I have only heard
about a few of them, and I'm not even sure they have any clear
understanding why they do it..

John / jeblad

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