Interesting, well-known and/or usefull books/reviews/articles/must-haves first? Technical books second (must-haves for experts)? Less important books and leaflets last (nice-to-have)?
That way the top shelf is relevant and attractive for most (new) programmers, there's a section for experts, and there's a section of books which are outdated by documentation fixpaks. The shelves may contain subsections, like Rexx or SOM. Or a subsection for all toolkit 1.x books. For readers it's not that relevant that Microsoft has published OS/2 books. Their Petzold's book/"bible" may be a top shelf book, while the Microsoft Programmer's References are less important. Their LAN Manager book could be a unique book fo experts. The average programmer may never need it, but it may be the only LAN Manager book.
I haven't check it, but ISTR that one of the "books" documents the options of ICC. So it's hardly more than the printed output of "ICC /?". An OS/2 museum should display it, but in the context of EDM/2 I'ld move such a book/leaflet to the lowest shelves. Its use is limited. Nice-to-have, but a link to the OS/2 museum will do.
You may need an extra section (or page), for one because I haven't tried to virtually move all books to new sections, and I don't know all books.