Here are the books at our local Op Shop where I volunteer a few days a week. I did not set up the system, a previous volunteer who was a retired librarian did. However, I’ve made it my job to try to keep the books where they belong. This is part of the non fiction section. It is a tiny room so there is not really enough room for all the books that are donated to us but by keeping it in order it is easier for the customers to see what we have.