Read the excerpt from “A Poem for My Librarian, Mrs. Long.” Mrs. Long asking what are you looking for today
When I wanted Leaves of Grass or alfred north whitehead
She would go to the big library uptown and I now know
Hat in hand to ask to borrow so that I might borrow

The implicit details in this excerpt best support the conclusion that

Mrs. Long feels angry about having to ask to borrow books.
the speaker asks for books that were often difficult to find.
the speaker appreciates the librarian’s efforts to get her books.
young children are not allowed to borrow books on their own.