Summer by Edith Wharton

The hours of the Hatchard Memorial librarian were from three to five; and Charity Royall's sense of duty usually kept her at her desk until nearly half-past four.

But she had never perceived that any practical advantage thereby accrued either to North Dormer or to herself; and she had no scruple in decreeing, when it suited her, that the library should close an hour earlier. A few minutes after Mr. Harney's departure she formed this decision, put away her lace, fastened the shutters, and turned the key in the door of the temple of knowledge.