There is potential here to explore in a more specific context. I think this font pairing is very energetic, and keeps the eye moving and dancing around the text. While Gill Sans is a very quirky and thus dominant personality in most settings, the even more unique Bell Gothic tames the otherwise-wiley Gill Sans into a more submissive role. Both typefaces are sans-serif but they share practically nothing else in common. Here we have a classic example of where contrast between two typefaces can be made to work really well. Gill Sans is the character actor of typefaces, is it not? Always odd, but somehow it works. I think the playfulness of American Typewriter brings out the levity that is intrinsic to Gill Sans in the right setting. It’s reads wrong on the package, sounds wrong even suggest eating it, but when you take a bite (if you like spicy food and if you like chocolate), you have to step back in your mind and say, “Hey, that’s not too bad!” And so it is with these two typefaces. Kind of like cayenne pepper and dark chocolate.
When I was putting together the font combinations book, I had the opportunity to see a lot of typefaces on the same page that I would never, ever, have thought to put together. Sometimes, likely combinations are found in the most unlikely ways. A close examination of Gill Sans reveals why they work so well: look at the lowercase “a”, “t”, and “r” for some quick visual insight into why Gill Sans works well with an old-style design like Goudy. The generous and complimentary x-heights work well with their old-style roots. Goudy in 1915-not too far apart) they come close. While I can’t say they were made for each other (Gill Sans was designed by Eric Gill in 1926 and Goudy Old Style was designed by Frederick W. Fonts that work with Gill Sans: Gill Sans & Goudy Old Style
Why not start with a limited set of classic typefaces? Based on some research I did, I have my own fairly-representative list of the most popular classic typefaces that I used in the Font Combinations App and The Big Book of Font Combinations. If you are interested in what books we either make or might make for font combinations, the best thing to do is subscribe to the newsletter (either to the right or down below if you are on your mobile device).