Back in November I submitted a claim to Guinness to check if I was truly the World’s Tallest Librarian. It turns out that they don’t track that record. Here’s a quote from their email:
Guinness World Records is in no way associated with the activity relating to your record proposal and we in no way endorse this activity. If you choose to proceed with this activity then this is will be of your own volition and at your own risk.
So, I can continue to be the World’s Tallest Librarian; I just do so at my own risk.