My favorite story from my mother when she worked in the public library of my hometown.
A woman walked in and approached Mother to help find a book. Okay, that is what librarians do.
"I want the complete works of Shakespeare by Edgar Allen Poe"
<Insert my mother sniggering a bit until she realized that the woman was serious and getting annoyed> "You want what?"
"Like I said, the Complete works of Shakespeare by Edgar Allen Poe."
It took Mother about 10 minutes to explain why that wasn't going to work. She could either get Shakespeare or Poe. But otherwise - Wrong centuries, wrong styles, wrong sides of the ocean... The woman kept getting angrier and demanded another librarian. Then got angry when that librarian told her the same thing. "Here is Shakespeare and here is Poe"
That and the gal who came in to pick up a book from her high school English list. "I need a book. Don't know the title but it is by some dead Greek guy."
Similar but inverted. I was looking for an edition of I Robot with a forward by Harlen Elisson. The lady at the book store kept telling me I Robot was written by Isaac Asimov. So I would say, I kno Isaac Asimove wrote I Robot but I want the edition with the special forward by Harlen Ellison. Finally another employee heard and showed her the edition I wanted to order.
Another time I was in the book store and heard this poor girl arguing that Prince Edward Island was a real place. Her adult and the book store employee kept saying it was made up by L.M. Montgomery. So I picked up an atlas from the reference section found a map on the east coast of Canada and took it over to them. I said excuse me ladies but I think you should see this and showed them the map. I have to give them credit - they apologized to the girl. Then I took a snapshot of Sis, our cousins, and me on a red sand beach with the red clay cliffs behind us - and asked the girl if she wanted to see the red soil of PEI. (PEI has both red sand and white sand beaches. The water at the red sand beaches is warmer than the white sand).