ACROSS

 1 and 25 down Moving stories, to say the least, about the pilgrims. (10,5)

 6 One might worship this backward town where Napoleon defeated the Austrians. (4)

10 Young actress–at least in older films. (7)

11 Poet’s musical companion. (7)

12 In favor of foreign wine, a point being abandoned. (8)

13 Building material to take without authorization, one hears. (5)

15 The author Howard’s times of no input. (5)

17 One sometimes asks for a little at the barber’s. (3,3,3)

19 A place in New York evidently deserted by the singer. (3,6)

21 An artist of the hobo school. (5)

23 Straight build. (5)

24 One might confuse porn a lot where part of the force should be. (2,6)

27 Get too big for one’s britches? (7)

28 Nymph of West Indian origin? (7)

29 You’re certain to be this. (4)

30 He’s confused about one of Hitler’s groups, and falls still further around it. (Purchases might be a matter of habit here.) (5,5)

DOWN

 1 and 14 Stop classical rescue at the pass, and certainly don’t 8-26! (4,3,3,4)

 2 One of those things that was shot from pole to pole, in a passage well-known to New Yorkers. (7)

 3 Park is translated in two languages. (5)

 4 The one in India isn’t what modern astronomers refer to. (5,4)

 5 Mature, like a Rhode Island writer. (5)

 7 The way you talk! Being laid up, and so forth, is bad! (7)

 8, 26 and 24 down That’s one way to hound the enemy! (3,4,3,4,2,3)

 9 Disrupt things, as a way to bring up bohemians at first. (5,3)

14 See 1 down

16 The Air Defense didn’t use them to clean things up. (8)

18 The CIA is confused with bits of foam around, and little stains. (3-6)

20 In Germany, it wasn’t the common voting type. (7)

22 No. 8 on some charts. (7)

24 See 8 down

25 See 1 across

26 See 8 down