Enjoyed some Half Acre Beer in Chicago this holiday. I noticed that the typeface was was very clean and suspected that it might have been Gotham. Turns out I was right. Here’s an interview with the designer.
The other major deciding factor was that Gotham was a traditionally American face. It was inspired by the Port Authority Terminal in New York City. It was rooted, firm, stable, had many weights, it was very easy to typeset, all these made our decision quite easy.
Gotham is also what Obama’s campaign used. This article from idsgn is a must-read if you want to learn more about Gotham.