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ACROSS

 1 Endorsement of a program to introduce pests? (12)

 9 Callas beginning to master a vocal solo (5)

10 Get pain from bread or Lean Tarts mix (9)

11 State sent letters, mostly duplicates (9)

12 City in Texas, Washington, and Colorado (4)

14 Running away is doubly false (6)

15 Like Mister Wilder’s group of stars (8)

17 Put a weapon in storage! (8)

19 Composed a pattern that contains a piece of calico (6)

22 Data gathered from rain forest (4)

23 Anglican version of Pepsi-Cola (9)

26 9 once stirred coffee (9)

27 Competes to follow the lead of Ira Brown, et al. (5)

28 Mail corn bread, dudes, with time delay (12)

DOWN

 1 Return a watch and send the money in (5)

 2 Terribly arty fashion, in the end, dominates New York with oppressive power (7)

 3 Cook outside of a seabird—it is a common sight on campuses (10)

 4 Annoyingly affected hairdo? Yes, sort of (6)

 5 Author of Mary Poppins Close to Home is cross (8)

 6 Roughly concealed in ambassador’s oration (2,2)

 7 Condiment used to be somewhat before the end (6)

 8 Improved note in support of drug (8)

13 Strange, lice-free TV in which you can see yourself (10)

14 Loud summery celebration (8)

16 Material concerning part of the Middle East (8)

18 French engineer in excellent condition fell short (6)

20 Turn over important information about a hat (7)

21 Asian covering The King and I overlooks an illness (6)

24 Composer is held back by Horowitz, silly! (5)

25 Spies going over cipher to create a greeting (4)

SOLUTION TO PUZZLE NO. 3379

ACROSS 1 PUN(ISHMEN)T (hems in anag.) 6 hidden 10 [o]VERSE[e] 11 D(UMPL)INGS (lump anag.) 12 anag. 13 [A]meric[a] anag. 15 C(HICK)EN[t] 17 anag. (&lit.) 19 rev. 20 MADDOG + S (rev.) 22 CH(APT)ER 24 RU(B)LE 26 BUTTE + R 29 SHOULD + [v]ERS[e] 30 B + READ 31 DUM + B (rev.) 32 anag.

DOWN 1 P + AVE (&lit.) 2 NORTHW (anag.) + IN + D 3 SP(EL)UNK 4 MI + DAS (rev.) 5 NUMB[er] 7 hidden 8 D + ESCENDER (anag.) 9 ELI + CIT[y] 14 alternate letters 15 anag. 16 hidden 18 anag. 21 ONE + ILL 23 AUTOB (anag.) + US 25 2 defs. 26 BA(S)IL 27 “scene” 28 [r]ODIN