We have many “rare” books, too – not really rare, but instead out-of-print historical reference/memories/photo books by local authors. We are currently keeping all the duplicates (sometimes up to four copies!) in a locked cabinet in our collections storeroom, since the copies out in our research library are in use constantly. As they wear out, we then have more on hand to replace them. We also, unfortunately, have had a couple “walk” despite our efforts at keeping a vigilant eye, and have been thrilled to have the extra(s) on hand to keep our library stocked.
