1: Tie torn coats (7)

4: at peoples uptown bar for starters? (3)

6: Have sheriff's helpers joined Nazi police (7)

7: Spread damage and trouble in rage (9)

10: Piano finale not determined (7)

12: A representative may be a scamp (3)

13: Fiber extracted from thistles (5)

1: A supporter starting to mock President Garfield's middle name (5)

2: Seasoning for lark (5)

3: Conductor of opera rising in encore (9)

4: He wrote a bit of poetry! (3)

5: How to get around doing business, essentially (3)

8: Contrarily accepted gold slab (5)

9: Delete Times editorial first (5)

10: Part of upside-down Greek letter (3)

11: Unappealing environment for a snooze (3)