Why don't you do a good deed? Give them to Casi Nuevo - a bookstore that donates all its proceeds to the British-American Benevolent Society, an organisation that runs a retirement home for the Anglo-Argentine and English-speaking community. Some of the residents are welfare cases who could not afford the good housing and care that "BABS" offers them. CASI NUEVO has an ad in the Day-by=Day column of the Herald. Your efforts will be truly appreciated!
Walrus Books @ Estados Unidos 617 in San Telmo
Buys second Hand books fiction, childrens books, classic literature, travel guides.
They are open Tuesday through Sunday from 10 a.m. to 8 p.m.
Am not sure how much they pay for books though....