The following events this week are free and open to the public unless otherwise noted. This is not a complete listing. For additional events, see Bookshop on our pages or log on to section/books.

11 Monday

12:30 P.M. Jennifer Weiner signs (no reading) her most recent novel, Little Earthquakes, at Borders-Downtown, 18th & L Sts. NW, 202-466-4999. She will also read and sign at 7:30 p.m. that evening at Barnes & Noble-Bethesda, 4801 Bethesda Ave., 301-986-1761.

7 P.M. Elizabeth Kostova reads from and signs her new novel, The Historian, at Politics and Prose, 5015 Connecticut Ave. NW, 202-364-1919.

7 P.M. Omar Tyree signs his new novel, Boss Lady, at Books-A-Million, 7000 Arundel Mills Circle, Hanover, Md., 443-755-0211. He will also sign on Tuesday, July 12, at 5 p.m. at B. Dalton Booksellers, Union Station, 50 Massachusetts Ave. NE, 202-289-1724, and again at 6:30 p.m. at Karibu Books, the Mall at Prince Georges, 3500 East-West Hwy., 301-559-1140.

12 Tuesday

Noon. David Poyer discusses and signs his new historical novel, That Anvil of Our Souls: A Novel of the Monitor and the Merrimack, at the U.S. Naval Museum, Washington Navy Yard, 805 Kidder Breese St. SE. For security reasons, call 202-433-4995 at least 24 hours in advance to RSVP; visit for details.

2 P.M. Children's author Mary Quattlebaum, author of the picture book Family Reunion (illus. by Andrea Shine), and the chapter book Grover G. Graham and Me, hosts a poetry workshop at Aladdin's Lamp Children's Bookstore, 2499 N. Harrison St., Arlington, Va., 703-241-8281. A book signing follows.

6:30 P.M. Thomas Leslie, assistant professor of architecture at Iowa State University, presents a lecture on architect Louis Kahn as technologist, drawn from his new book Louis I. Kahn: Building Art, Building Science, at the National Building Museum, 401 F St. NW. Admission is $15 for nonmembers; call 202-272-2448 for details.

6:30 P.M. Geneva Holliday signs her new novel, Groove, at Karibu Books-Bowie Town Center, 15624 Emerald Way, 301-352-4110.

7 P.M. Scott Simon, correspondent and host for NPR's Weekend Edition Saturday, reads from and signs his new novel, Pretty Birds, at the Corcoran Gallery of Art, 500 17th St. NW. Admission is $15 for nonmembers; 202-639-1703.

7 P.M. Helen Oyeyemi reads from and signs her new novel, The Icarus Girl, at Borders-Silver Spring, 8518 Fenton St., 301-585-0550.

7:30 P.M. Donald Illich and Jonathan Vaile read from their work as part of the Joaquin Miller Cabin Poetry Series held at Miller' Cabin, Picnic Grove #6, Beach Dr. at the Military Rd. overpass in Rock Creek Park, 301-587-4954.

7:30 P.M. Curtis Sittenfeld reads from and signs her novel, Prep, at the Friendship Heights Village Center, 4433 S. Park Ave., Chevy Chase, Md., 301-656-2797.

13 Wednesday

10:30 A.M. Physician Marie Savard discusses and signs Apples & Pears: The Body Shape Solution for Weight Loss and Wellness (written with Carol Svec) at the Library of Congress, James Madison Bldg., Mumford Rm., 101 Independence Ave. SE, 202-707-8035.

14 Thursday

Noon. The Smithsonian Institution Libraries present a lecture, "The U.S. Naval Observatory Through a Novelist's Eye," by Thomas Mallon, drawn from his novel Two Moons, at the National Museum of American History, Carmichael Auditorium, 14th St. & Constitution Ave. NW, 202-633-1000.

6:30 P.M. Robert W. Merry, president and publisher of Congressional Quarterly, discusses and signs Sands of Empire: Missionary Zeal, American Foreign Policy, and the Hazards of Global Ambition at the National Press Club, 529 14th St. NW. Call 202-662-7129 or e-mail to RSVP.

7 P.M. Journalist Charles Peters discusses and signs Five Days in Philadelphia: Wendell Willkie, Franklin Roosevelt, and the 1940 Convention that Saved the Western World at Politics and Prose, 202-364-1919.

7 P.M. Painter and art historian Jonathan Weinberg discusses and signs Male Desire: The Homoerotic in American Art at Lambda Rising, 1625 Connecticut Ave. NW, 202-462-6969.

15 Friday

12:30 P.M. Washington Post reporters Peter Baker and Susan Glasser sign their new book, Kremlin Rising: Vladimir Putin's Russia and the End of Revolution, at Borders-Downtown, 202-466-4999.

16 Saturday

1 P.M. Nora Roberts will sign her new mystery, Origin in Death (written under the pseudonym J.D. Robb). Authors Sabrina Jefferies, Donna Kauffman, Victoria Thompson and Diane Whiteside will also appear at the 10th anniversary celebration at Turn the Page Bookstore, 18 North Main St., Boonsboro, Md., 301-432-4588.

17 Sunday

2 P.M. Wil Haygood, staff writer for The Post's Style section, discusses his most recent book, In Black and White: The Life of Sammy Davis, Jr., as part of the WPFW Book Club held at the Emma Mae Gallery, 1515 U St. NW, 202-588-0999, ext. 344.

5 P.M. Mark Helprin reads from and signs his new novel, Freddy and Fredericka, at Politics and Prose, 202-364-1919.

Special Notices

The National Press Club will hold its annual used book sale on Thursday, July 21, from 11 a.m. to 4 p.m. in the Murrow Room (13th floor) at the club's location, 529 14th St. NW. Proceeds benefit the Eric Friedheim Library. For details, call 202-662-7523.

And remember, J.K. Rowling's sixth novel chronicling the joys and travails of Harry Potter at Hogwart's School of Witchcraft and Wizardry, Harry Potter and the Half-Blood Prince, goes on sale promptly at midnight, July 16. A slew of bookstores plan to be open late on Friday, July 15 to mark the occasion, including Vertigo Books, at 7346 Baltimore Ave. in College Park, Md. (301-779-9300), where the party begins at 10:30 p.m.; Barnes & Noble-Reston, at 1851 Fountain Dr. (703-437-8147), where the revelry starts a bit earlier, at 6 p.m.; Politics and Prose, at 5015 Connecticut Ave. NW (202-364-1919), which will stay open until the magic hour; and at all metropolitan Borders Books, each of which will host an evening of games and activities beginning at 9 p.m. All of these stores offer the opportunity to purchase the book in advance.