I'm proctoring comprehensive exams (wish them luck, folks), and a poster grabbed my attention: here it is, as sold by the American Library Association. Look carefully at the "R E A D" at the top, and the "Open/Learn/Close/Never Quit" menu on the left. What font is this?
Yes, it's very clearly a version of Chicago--the standard classic Macintosh menu font, with that distinctive thick diagonal in the "N" and that "v" curving on the right. It's a Mac menu!
The blurb on the ALA page says: "Microsoft mogul knows that reading opens windows to the world." Or, perhaps, the real message is: "Bill Gates likes reading as much as he likes Macs." Ooops. I wonder if it's an accident. I kind of imagine a catty Mac user at the design agency having a bit of fun. The copyright date on the poster is 1997. Chicago was used by default for Mac menus through MacOS 7.6, and OS 8 was released mid-1997, so at the time the poster was made, that would have been quite recognizable. And graphical designers (typically) don't pick fonts at random.
In case anybody is curious, I use Windows and Linux most of the time, though I also have a working Powerbook 190 with MacOS 7.6.