Hi Doris, Large collections can be dropped off at our Rockville Bookstore during business hours. More details here: https://www.folmc.org/bookstores/ Thank you!
If you are familiar with Silver Spring, you lbow wherenthe old Silver Spring Library is located on Colesville Road. It has been turned into a Second Hand Book Stiore. They take donations of books there.
Sorry you will have to ask them
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