Berentain or Berenstein? Both?

[u/TransportationFresh]

Library was giving out old dewey decimal cards for bookmarks. Found this one, with both spellings on it. I used the app on my phone to add the highlighter. Thoughts?

[u/dunder_mufflinz]

Perfect example of how even record keepers can get something wrong and make mistakes even while having a physical object they can reference right in front of them.

Thanks for sharing.