It wasn't until my second year that I got to actually work with Church.
I went to Princeton in the fall of 1930 as a half-time instructor.
I read one or two other books which gave me a background in mathematics other than logic.
I had some hesitations about philosophy because, if you worked out a philosophical theory, it was hard to know whether you were going to be able to prove it or whether other theories had just as good a claim on belief.
I think Veblen had an interest in logic.
I think that after Church got his Ph.D. he studied in Europe, maybe in the Netherlands, for a year or two.