Who'd a Thunk It

I have been trying for some months to find books by Alexander McCall Smith in my local library.  I looked in the general fiction stacks, the mystery section, and the large print section, with only occasionally coming across one of the books by this author.  I am trying to ready the books in the series The Number 1 Lady's Detective Agency in order.  I have not been able to find them in the library, although the computer indicated they were there.  Today, I asked a reference librarian, who took me directly to these books.  Hmmm. They were not listed under Smith, but under McCall.  Who'd a thunk it!