Selecting and Combining Typefaces
http://www.stc.org/confproceed/2002/PDFs/STC49-00068.pdf

Miller, Susan G.
STC Proceedings
2002

Abstract:

One of the most often asked question about type is: Which typefaces work well together? Finding the right combination of typefaces can make the difference between a good design and a great one. But with so many faces to choose from, how do you decide which ones will look best together? Although typeface selection is a very personal subjective decision, this paper will address several strategies that will help narrow down the search and ultimately help make the most effective type combinations.