Carpe Librum, the used bookstore at 1030 17th St. NW, near Farragut Square, is back open. The store closed for a week to restock and reorganize its shelves.

The front entrance of Carpe Librum, which was close for a week so its shelves could be reorganized (Timothy R. Smith/The Washington Post) Carpe Librumwas closed for a week so its shelves could be reorganized. (Timothy R. Smith/The Washington Post)

Before the reorganization, shelves were categorized by subject, such as military history, law or general fiction, but few of the titles were alphabetized, which made it difficult to find titles. Now, biographies are arranged alphabetically by subject, history books are arranged by time period and fiction books are alphabetized by author.

Carpe Librum has also extended its hours for spring. It will be open Monday through Friday from 11 a.m. to 7:30 p.m. and Saturday and Sunday from 11:30 a.m. to 6 p.m. Books, CDs and DVDs cost between $1 to $4.

Proceeds from Carpe Librum go to Turning the Page, a District public education nonprofit group. The space for the store was donated by the Lenkin Company, a real-estate development firm based in Bethesda.