This year's Westlake Porter Public Library annual Book Sale features a signed copy of Harry Potter and the Prisoner of Azkaban, thousands of other books, DVDs and a silent auction for some special items, said Friends of Porter Public Library's Jennifer Cirincione.

The sale starts with a Friends of the Library preview from 4 to 7 p.m. Feb. 1. Anyone who joins the friends group that day will be eligible to shop early. The sale continues from 9:30 a.m. to 8:30 p.m. Feb. 2 and 9:30 a.m. to 4:30 p.m. Feb. 3 and 4. 

Everything will be half-price on Feb. 4, and the final $2 bag sale wraps up the annual event from 1:15 to 4:30 p.m. Feb. 5.