Friends of the Richmond Public Library will be holding a book sale this weekend at the Main branch, also coinciding with First Friday celebrations.
From the announcement:

Give in to your book buying addiction and attend the Friends’ Fall Book Sale. The sale will offer thousands of great hardbacks at $2, paperbacks, large print and children’s books at 50 cents, DVDs and CDs at $1, and cassettes at 25 cents. There are collectible books at a fraction of the going internet prices available in the Special Collections Room on Friday and Saturday.

The sale is open to the public:
Friday, November 5 from 12 noon – 5 p.m. and 7 – 9 p.m.
Saturday, November 6 from 10 a.m. – 4 p.m.
Monday, November 8 from 10 a.m. – 6 p.m.