Puzzle 75 - 5x5

The cramming continues. But even I have my limits. See, the square labeled 1 could have been a C, making both words more simple. But I wanted it like this. However I did not make the bottom-right square a Z, though it could be. That's too many proper nouns for a puzzle already loaded with them. But you probably know enough names to finish. As before, they're from various fields.

PUZ

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