Never let it be said that the literary scene in South Boston is somehow defeated or diminished by bad weather. The Friends of the South Boston Branch Library held their regular, periodic book sale Saturday, despite predictions of a snowstorm. The sales volunteers placed bookshelves outside, in utterly selfless defiance of Mother Nature and her wiles. The quick-frozen precipitation actually began before the book sale finished at its regularly scheduled closing hour of 3 p.m. Proceeds from the book sales go to support the Branch Library’s community activities that aren’t covered in the regular operating budget. The sale raised about $3,000.