Finding Antique Books Libraries. Several years ago, we received many classic and non-fiction books from a small library. We still search discard shelves and purchase those we find special. If your library doesn't have a designated place for these, ask. Sometimes they are collected for an annual sale.
Thrift shops are another source for old books.
Our older set of encyclopedias, a 1930 Book of Knowledge , wasn't even unpacked yet when we purchased it from Goodwill. Our affection grew stronger, when we saw its profuse content of literature, history, and art. At another store, we unearthed a lovely devotional book. At yard sales, our eyes are quick to spot, our hands quick to examine these keepsakes. The tradeoff is usually a fun day, especially if you are blessed with pleasant weather.