What colleges have the most Pulitzer prize winners?

The following colleges and universities have produced the most Pulitzer Prize winners among their alumni:

1. Columbia University (49)

2. Harvard University (48)

3. Yale University (34)

4. University of California, Berkeley (29)

5. Stanford University (27)

6. University of Chicago (26)

7. University of Missouri-Columbia (24)

8. University of Michigan (23)

9. Northwestern University (21)

10. University of Iowa (20)