After a lot of scanning and OCRing, here’s the OS/2 2.0 Technical Library (well, most of it) in PDF form. This was IBM’s complete programming documentation for OS/2 2.0, covering general programming, GUI development, Workplace Shell, and device drivers. Certainly an important museum exhibit, and lots of pounds of good quality paper.
It’s interesting to consider what was and wasn’t in there—32-bit pre-emptive multitasking and multithreading, a GUI with advanced graphics engine, DOS virtualization, but strange partially 16-bit device drivers and no built-in networking.
Note that bitsavers has a subset of the Warp 3 version of the Technical Library, but it’s only the Presentation Manager documentation, at least currently. Most of the documentation also existed in electronic form.