How about eBay or Amazon? I use them frequently. The OS/2 bookshelf is aged and not much has been printed recently. However, in spite of this, you'll realize how relevent the material still is.Have you tried IBM Redbooks? I think the address is www.redbooks.ibm.com. If you search for OS/2 at their site, you'll find over 100 redbooks with OS/2 or references to it. Most are downloadable as PDF and some can be ordered as brand new pubs! I hope this helps. Perhaps you are looking into something particular?