3941 Wanted: Dead or Alive by Aldebaran

Aldebaran managed to get all the elements of the theme neatly included. The unclued thematic entry had to be FEE-FI-FO-FUM. Each clue contained one or two extra letters (these four types, in approximately thematic proportions to an Englishman were A, O, B, AB - the 4 main blood types). This led solvers to the quotation.

Fee-fi-fo-fum
I smell the blood of an Englishman
Be he alive or be he dead
I'll grind his bones to make his bread

Symmetrically located in the grid, which had left-right symmetry, were anagrams of bones and when highlighted they represented a loaf or slice of bread. The eight bones were -

COAST - COSTA
MOVER - VOMER
COAX - COXA
LUNA - ULNA
PROMETAL - TEMPORAL
SIPHONED - SPHENOID
SAULT - TALUS
ALARM - MALAR

Extra letters are shown in square brackets.

ACROSS
2 [B]old approach succeeded inside skirt for some (5)
COAST S (succeeded) in COAT
6 Carrier's minute past[a] (5)
MOVER M + over
11 Sure about a field g[o]al working for Buffalo Bill (6)
OAKLEY A in OK (sure) + LEY (ref. Annie Oakley)
12 Gum discovered in extra ca[b] journey (6)
ACAJOU Hidden
14 Cap part of [o]pera rambling about half a jug of wine (7)
EARFLAP FLA(GON) in anag. (O)PERA
15 Hanker after f[o]ur and forty poles (7)
FURLONG FUR + LONG (hanker)
16 Rocky [a]pex ---- nothing showing (4)
EXPO anag. pex + O
18 [A]isles always fancy (4, two words)
I SAY is (isles) + ay
20 Perennial transformed stati[o]n arcade (12)
TRASCENDENTIA anag. statin arcade
22 I press one on r[a]re sports (6)
IRONER anag. I + on +rre
25 Projecting part in h[ab]it preferred (6)
TAPPET tap (hit) + pet (preferred)
26 Tank[a]: a poem by good chap from the East (8, three words)
LAY AN EGG LAY (poem) + G (good) GENA (cheek/chap) rev. The definition is TANK to fail (US inf.)
28 Disc[o], live and amateur, hard to take (5)
OBEAH O (disc) + be + A + h
31 Artists' se[a]t is missing the coloured old sponge (5)
SHOOL SCHOOL less C (coloured)
32 A great chaser, altering m[o]od in front of roadhouse (6)
NIMROD anag. m(o)od in + R (front of roadhouse)
33 A French engineer carries average n[a]il by general consent (7, two words)
UNA VOCE AV in un (a in French) + OCE
34 Growler perhaps showing illicit drug [a]mount (7)
ICE-BERG A growler is a small ice-berg. ICE (drug) + BERG=mountain
35 Pain is on c[o]urse (7)
MALISON MAL IS ON a curse
36 Me and father in b[o]ut when christening occurs (7, two words)
NAME DAY Me & Da in NAY
37 Rapid beginnings of space age last [a] month (5)
SAULT S + A (first letters) + ULT (last month)
38 Domestic go[o]d in morning panic (5)
ALARM Lar in AM

DOWN
1 P[o]et used to network (4)
COAX 2 definitions COAX/CO-AX
2 See Ar[a]gon in a bus (3)
CAR C (see) + Ar
3 One given to [b]e blunt about advert (6)
ALLUDE A + E DULL (rev.)
4 Sea dog could be found here getting drunk re[a]l easy (7)
SEALERY anag. re(a)leasy
5 Mistakes made by novices using pedal[o] for river (5)
TYPOS TYROS with P for R
6 Reve[a]l to the audience a term for non-felsic mineral (5)
MAFIC Sounds like MAFFICK = to revel
7 Eyed a clue to[o] casually (7)
OCULATE anag. A CLUE TO
8 Divinity in a p[o]ly in Virginia (6)
VARUNA A run in VA
9 Man not [O]K as forester? (3)
ROO Rook less K forester is a large kangaroo
10 La[b] coats ... one in parts ... moth? (4)
LUNA UN (one in dialect) in LA
13 Carter's concern represented by g[a]y logotype (10)
EGYPTOLOGY anag. ref Howard Carter
17 Cast iron in power ro[o]m and elsewhere (8)
PROMETAL P + ROM + ET AL
19 Dram[a], perhaps made sharper, was diverting (8)
SIPHONED SIP + HONED
20 B[a]n ritual when reforming court (8)
TRIBUNAL anag. BNRITUAL Unfortunately this could be an anagram of another bone, the TURBINAL. However, its situation in the grid would have spoiled the symmetry.
21 Message is "damage to horn ---- A[A] turning up" (8)
AEROGRAM MAR + GORE + a (rev.)
23 M[o]an about member's habit (7)
GARMENT ARM in GENT
24 D[o] Narnia play for girl (7)
ANDRINA anag. D NARNIA
26 Lecturer advanced with time [a]way in this country (6)
LATVIA L + A + T + VIA (WAY)
27 Zoroastrian is initially [a]gainst religion including goddess (6)
GHEBER G + R (initials) including HEBE
29 See c[ab]in inverted in prism (5)
NICOL LO CIN (rev.)
30 Close b[o]y's school finally after working coal (5)
LOCAL anag. COAL + L (last letter of school)