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ACROSS

 1 Ford, say, to write and attempt a trade (9)

 6 Picciotto? Picciotto comprehends what is being discussed (5)

 9 Hiss and evil glare (5)

10 Carry on—I’m retreating to be protected by barber (9)

11 Best sellers crush 24 (3,6)

12 Debilitated after having finally spent small change (5)

13 Princess or fashion designer (4)

14 Multinational clothing retailer a pair of educators have inherited from
older relatives, perhaps? (4-2-4)

18 Funnyman Charles is welcoming short visitors from outer space? (6,4)

19 Dance with terrible pest (4)

22 Like Yeats, Murdoch and Waugh, at last (5)

24 Segregation ruined 11 (9)

26 Don’t stop to look back at musical instrument capturing interest (4,5)

27 Knife a god (5)

28 North country on the Arabian Peninsula is an island? (2,3)

29 Most diminutive amalgam of stein shards and some of their replicas (9)

DOWN

 1 Standing around, a tree fell to earth (7)

 2 This rogue reformed to become honorable (9)

 3 Eastern war damaged chopper—this could make it hard to perceive
sounds (6)

 4 Magnificent starter served in small dish in Southeastern city (5)

 5 Definitely ate dry crackers in the recent past (9)

 6 Gingrich backing accessories for the Jazz Age (8)

 7 Identify piano string (5)

 8 18D, i.e., switched register at front desk (5,2)

15 High flyer ultimately tore into an operatic table of contents? (9)

16 Dissolute hedonist is brought to ecstasy (not within marriage) (2,3,4)

17 Broadcaster’s need: a greeting upon mounting horse in lake (8)

18 Elegant doll is yellow (7)

20 Unfortunately, cad opts for some digital content (7)

21 Chiefly, situation over time without alteration! (6)

23 Strut with slightly idiotic smile (1-4)

25 Dispute excerpt from Edgar Guest (5)

SOLUTION TO PUZZLE NO. 3487

ACROSS 1 Z + EROS + UM + GAME
7 & 29 B-OWT (rev.) + I.E. 9 hidden
10 U(NC + ONCE)RN 11 K + NOT TED
12 hidden 14 anag. 15 PAS(SPOR)T (pros
anag.) 18 M(A CAR)OON 20 VIC + TIM
23 anag. 25 S + LO(EG)IN 27 CHILD + HOOD 28 [i]AGO + NY 30 anag.

DOWN 1 Z INC. 2 REB UKES 3 STEG OS (rev.) + AU + R 4 MO(UN)TS (most anag.) 5 ARC + A DIAN[a] 6 ER(N)IE  BEE + FALO (rev.)
8 WIN + TERTIME (anag.) 13 S(I AM + ESE)CAT 16 [a]SKING + RAFT
17 F(O)RSOOT + H (sort of anag.) 19 prac[t]ice anag. 21 T(IN)HORN
22 H + OLDER 24 RAD II 26 hidden