The valid schedules are:
- \( \text{Dr. Cook Mon. at 10:00}, \text{Dr. Clark Mon. at 9:00}, \text{Dr. Baker Wed. at 11:00} \)
- \( \text{Dr. Cook Wed. at 11:00}, \text{Dr. Clark Mon. at 9:00}, \text{Dr. Baker Mon. at 10:00} \)
Thus, the answer is:
\(\boxed{\text{Valid schedules: 1 and 2}}\)