The biggest used book sale in Montana is the annual sale at the Historical Museum at Fort Missoula. Upwards of 80,000 books are available on the first day, all of which have been sorted and culled (no ex-library, damaged, outdated, etc, make the cut), meaning at the end–always the first Sunday in November–there are still literally thousands of excellent titles remaining. We’d love to see these end up in Little Free Libraries, so please email me and I can send more info.