to my knowledge, no, there's no centralized place where he does this. most of my interpretations are based on reading his books in conjunction with broader knowledge of Christian theology and history and certain specific statements he's made here and there--for example, his opinions on Lamarckism and the real historicity of Jesus in Castle of the Otter. in this way you can start noticing, say, Wolfe's interest in paradox, and then put that into conversation with the history of paradox in Christian theology and seeing who he seems to be informed by. reading fiction is obviously not a way to draw a bead on an author's specific beliefs, but when you read them broadly you can begin to get a sense of where their interests lay. so that's a disclosure for me saying Wolfe is a "weird Catholic" is inflected by the fiction and his paratextual statements because i think in the day-to-day he was probably not very odd, but he probably semifrequently thought about what it might mean for an alien to take communion (which is not an unknown theme in Catholicism, or Catholic sf especially) and his writing often feels to me as if it's responding to notions like that.
