A history buff’s dream book sale

What Soldiers & Sailors Memorial Hall & Museum is holding a "one-time" history book sale. What kind of history?Military, European, Middle Eastern, ancient, Asian, American and more, according to an event listing.
Where Soldiers & Sailors at 4141 Fifth Ave. (Oakland)
When April 15, 2017 at 9:00 am to 3:00 pm
How much Free