1. An obvious truth (6)
4. Bookish (8)
10. Turning upside down (9)
11. Aspect (5)
12. Labor association (5)
13. Spread throughout (9)
14. Impressive (7)
16. Postcards and letters (4)
19. A type of hair style (4)
21. Warning signal (7)
24. Customers collectively (9)
25. Marble (5)
26. Jewish teacher (5)
27. Squeeze box (9)
28. Brothel (8)
29. Second Coming (6)
Down
1. A court with 3 judges (8)
2. Unspoken (8)
3. Small finch (5)
5. A display of bad temper (7)
6. Losing air (9)
7. Lady-slipper (6)
8. Temporary caregiver (6)
9. Teat (6)
15. Not defensive (9)
17. Explosive (8)
18. "The Information Superhighway" (8)
20. In general (7)
21. Marked by extreme intensity (6)
22. Sacred beetle of ancient Egypt (6)
23. Supple (6)
25. Pungent (5)