hearing a hilarious/horror story from a friend and I just want to remind everyone to practice book humility, your books are almost CERTAINLY not valuable. And no library wants them.

There is one MAYBE valuable book in my house and that is:
1. a self-published print run of 200
2. signed by the author (who did later become notable)
3. in the 1930s

& most libraries would not want it. Brown., Yale, Temple, & a few others have it.

More likely to be a collector item.