Edit (7/21/2014): We have finished proofreading Jacquet-Langlands and posted it to Robert Langlands's publications site. If you would like a copy, please download it from here:
Many thanks to everyone who submitted comments. If you see any more errors, please let us know. My email address is my first initial and then my last name, without spaces or other characters in between, and then ias.edu.
I'm currently proofreading Hervé Jacquet's and Robert Langlands's Automorphic Forms on GL(2) for future republication. I was wondering if some of you had noticed mistakes in it that we might correct.
Mathematical errors, misspellings, typos---any mistake, no matter how small, is welcome!