the entire orginal manuscript for Neal Stephenson's "Baroque Cycle".
Excerpt from a note at the end of the "Quicksilver":
"The manuscript of the Baroque Cycle was written by hand on 100 percent cotton paper, using three different fountain pens: a Waterman Gentleman, a Rotring, and a Jorg Hysek. It was then transcribed, edited, formatted and printed using eMacs and TeX. When it was totally finished, the TeX version of the manuscript was converted to Quark XPress format using an eMacs LISP program written by the author."
I had forgotten that the manuscript was kept here until I came across the display, and my jaw dropped. Neal Stephenson is one of my favorite authors, and this alone was worth almost the entire trip for me, because I am big goddamn nerd.