Combining .pdfs, retaining ToC

[Modred189]

Ok, so here's the issue. I just got a Nook for personal use as well as for law school. I'm going into patent law, and I just downloaded the MPEP (i.e. the patent law bible). It's huge. And unfortunately broken into ~40 chapters, each with its own .pdf file.

The Nook has ZERO file management, so I cannot simply throw them into their own folder. Is there some way I can combine them into one single .pdf?