Children of all ages are invited to celebrate America’s 250th anniversary by picking up an answer sheet at the youth services desk and finding patriotic pictures hidden around the library. Return your completed answer sheet to the desk for a small prize. Bealeton branch library, 10877 Willow Drive North; John Marshall branch library, 4133 Rectortown Rd., Marshall; Warrenton central library, 11 Winchester Street; 540.422.8500.