I know you are supposed to have 2 letters from academic sources. I have one from a TA, and one from a prof. The thing is, I never took a class with the prof. The journal I founded has worked with him for the past year, and we have interviewed 2 authors/visiting scholars from his department for the journal, so he knows me from that. I am also now doing research for him, this semester, for units.
Is this a good enough relationship? I know he will write me a good letter, but I keep reading that you should get letters from prof's who taught you and graded you. This guy knows my intellectual chops though, as I research for him, so it should be ok, right? Thanks.