I'm putting together a list of which mobs drop which manuals, to replace the one that was recently deleted when the "Questions" section of the General forum was removed. Please help me fill this in, and feel free to correct any mistakes you see. I will update this as often as people post with new information.
Weapons
Level
25 Weapon Production Manual - Skeleton Soldier (21), Harpy Queen (24), Corpse Sergeant (25)
Level
29 Weapon Production Manual - Treant (26), Clever Fox of Desert (26), Sand Golem (28), Desert Spider (29), Elite Spider of Dessert (29), Elder Drake (30)
Level
33 Weapon Production Manual - Sand Golem (28), Elite Spider of Dessert (29), Salamander (31), Red Spider (32), Silver Fox of Desert (33), Elite Silver Fox of Desert (33), Pilferer (33)
Level
37 Weapon Production Manual - Berserker (34), Bandit (35), Death Goddess (35), Goblin Scout (37), Blood Frenzy (37), Doom Slayer (38)
Level
41 Weapon Production Manual - Blood Frenzy (37), Blood Mistress Kamira (38), Gnoll Lancer (39), Highlander (40), Spike Canine (40), Dire Spike Canine (41), Gnoll Soldier (41), Two Headed Canine (43), Death Mask Lancer (44), Giant Larva (50)
Level
45 Weapon Production Manual - Beast Scythe (45), Salamander Ruin (50), Giant (52), Dragon (55)
Level
49 Weapon Production Manual - Cerebrii (51), Giant (52), Akane Giant (53), Dragon (55)
Level
53 Weapon Production Manual - Giant (52), Akane Giant (53), Master of Secret Technique (57), Elite Mystic (57), Wafe Debirch (58)
Level
57 Weapon Production Manual - Wafe Debirch (58), Wafe Peeler (60), Wafe Debirch Leader (62), Cursed Spider (65), Wane Spider (67)
Level
61 Weapon Production Manual - Wafe Debirch Leader (62), Elite Sphinx Fighter (63), Sphinx Speer Man (64), Elite Sphinx Speer Man (64), Wane Spider (67), Curd Hadian (69), Twin Hadian (71)
Level
65 Weapon Production Manual - Jumping Devil (65), Twin Hadian (71), Barren Eise (73)
Level
69 Weapon Production Manual - Curd Hadian (69), Male Assassin Bug (70), Baby Ape (72), Little Scorpionmantis (78)
Level
97 Advanced Weapon Production Manual - Fluton (136)
Shields
Level
25 Shield Production Manual - Dark Goddess (22)
Level
29 Shield Production Manual - Blood Wolf (27), Sand Golem (28)
Level
33 Shield Production Manual - Butcher (28), Elder Drake (30), Red Spider (32)
Level
37 Shield Production Manual - Pilferer (33), Berserker (34), Death Goddess (35), Bandit (35), Gnoll (36), Blood Frenzy (37)
Level
41 Shield Production Manual - Poison Mist (39), Elite Poison Mist (39), Highlander (40), Spike Canine (40), Dire Spike Canine (41)
Level
45 Shield Production Manual - Death Mask Lancer (44), Beast Scythe (45), Beast Flyer (46)
Level
49 Shield Production Manual - Giant (52), Akane Giant (53), Elite Akane Giant (53)
Level
53 Shield Production Manual - Wafe Debirch (58)
Level
57 Shield Production Manual - Wafe Debirch (58), Wafe Peeler (60)
Level
61 Shield Production Manual - Wafe Debirch Leader (62)
Level
65 Shield Production Manual -
Level
69 Shield Production Manual - Bogle (65), Curd Hadian (69), Hadeis (70)
Level
97 Advanced Shield Production Manual - Patriarch Botis (135)
Gauntlets/Gloves
Level
25 Gauntlet Production Manual - Skeleton Soldier (21), Dark Goddess (22), Great Horn Beast (24)
Level
30 Gauntlet Production Manual - Treant (26), Clever Fox of Desert (26), Blood Wolf (27), Desert Spider (29)
Level
35 Gauntlet Production Manual - Red Spider (32), Pilferer (33), Death Goddess (35), Gnoll (36)
Level
40 Gauntlet Production Manual - Brutal Deer of Desert (38), Gnoll Lancer (39), Gnoll Soldier (41), Beast Archer (42), Death Mask Lancer (44)
Level
45 Gauntlet Production Manual - Death Mask Soldier (47), Giant Larva (50), Dragon (55)
Level
50 Gauntlet Production Manual - Elite Goblin (49), Giant Larva (50), Elite Rough Jaguar of Desert (51), Cerebrii (51), Wafe Peeler (60)
Level
55 Gauntlet Production Manual - Giant (52), Akane Giant (53), Elite Akane Giant (53), Dragon (55), Wafe Debirch (58), Wafe Peeler (60)
Level
60 Gauntlet Production Manual - Wafe Debirch (58), Wafe Peeler (60), Sphinx Fighter (63)
Level
65 Gauntlet Production Manual - Curd Hadian (69), Barren Eise (73)
Level
70 Gauntlet Production Manual - Hadeis (70), Male Assassin Bug (70), Azer (76), Little Scorpionmantis (78)
Level
95 Advanced Glove Production Manual - Scissorfist Golem (121), Ranger Quanian (121)
Shirts
Level
26 Shirt Production Manual - Skeleton Soldier (21), Skeleton Lancer (23), Orc Soldier (23), Orc Fighter (25)
Level
31 Shirt Production Manual - Blood Wolf (27), Orc Axeman (27), Orc Sergeant (29)
Level
36 Shirt Production Manual - Red Spider (32), Pilferer (33), Bandit (35), Death Goddess (35), Baal (42)
Level
41 Shirt Production Manual - Brutal Deer of Desert (38), Gnoll Lancer (39), Spike Canine (40), Dire Spike Canine (41), Gnoll Soldier (41), Two Headed Canine (43), Death Mask Lancer (44)
Level
46 Shirt Production Manual - Beast Archer (42), Death Mask Lancer (44), Beast Scythe (45), Death Mask Soldier (47), Beast Crawler (48)
Level
51 Shirt Production Manual - Salamander Ruin (50), Cerebil (51), Giant (52)
Level
56 Shirt Production Manual - Akane Giant (53), Dragon (55), Wafe Debirch (58), Arcane Golem (59)
Level
61 Shirt Production Manual - Wafe Debirch (58), Wafe Peeler (60), Wafe Revertin (61)
Level
66 Shirt Production Manual - Barren Eise (73), Bogle (65)
Level
71 Shirt Production Manual - Hadeis (70), Little Koyemsi (72), Azer (76), Little Scorpionmantis (78)
Level
96 Top Armor Production Manual - Poacher Quanian (129), Cruel Nail Golem (130)
Pants/Skirts
Level
26 Pants Production Manual - Skeleton Soldier (21), Skeleton Lancer (23), Orc Soldier (23), Great Horn Beast (24), Orc Fighter (25)
Level
31 Pants Production Manual - Blood Wolf (27), Orc Axeman (27), Orc Sergeant (29)
Level
36 Pants Production Manual - Red Spider (32), Pilferer (33), Death Goddess (35), Bandit (35)
Level
41 Pants Production Manual - Gnoll Lancer (39), Spike Canine (40), Dire Spike Canine (41), Gnoll Soldier (41), Two Headed Canine (43), Death Mask Lancer (44)
Level
46 Pants Production Manual - Beast Scythe (45), Death Mask Soldier (47), Giant Larva (50)
Level
51 Pants Production Manual - Salamander Ruin (50), Cerebrii (51), Giant (52)
Level
56 Pants Production Manual - Akane Giant (53), Dragon (55), Goblin Commander (56), Master of Secret Technique (57), Wafe Debirch (58), Arcane Golem (59)
Level
61 Pants Production Manual - Wafe Debirch (58), Wafe Peeler (60), Wafe Revertin (61), Wafe Debirch Leader (62)
Level
66 Pants Production Manual - Bogle (65), Barren Eise (73)
Level
71 Pants Production Manual - Hadeis (70), Azer (76)
Level
96 Advanced Armor Trousers Production Manual - Assassin Quanian (126), Red-Eye Golem (127)
Helms
Level
27 Helm Production Manual - Skeleton Lancer (23), Corpse Sergeant (25), Orc Fighter (25), Blood Wolf (27)
Level
32 Helm Production Manual - Blood Wolf (27), Sand Golem (28), Desert Spider (29), Elite Spider of Dessert (29)
Level
37 Helm Production Manual - Red Spider (32), Berserker (34), Bandit (35), Gnoll (36), Goblin Scout (37), Blood Frenzy (37)
Level
42 Helm Production Manual - Doom Slayer (38), Poison Mist (39), Elite Poison Mist (39), Spike Canine (40), Dire Spike Canine (41), Beast Archer (42), Two Headed Canine (43), Death Mask Lancer (44), Death Knight of Iris (52)
Level
47 Helm Production Manual - Beast Scythe (45), Beast Flyer (46), Death Mask Soldier (47)
Level
52 Helm Production Manual - Salamander Ruin (50), Cerebrii (51), Akane Giant (53), Master of Secret Technique (57), Wafe Peeler (60)
Level
57 Helm Production Manual - Wafe Debirch (58), Wafe Peeler (60)
Level
62 Helm Production Manual - Wafe Debirch (58), Wafe Peeler (60), Wafe Revertin (61), Wafe Debirch Leader (62)
Level
67 Helm Production Manual - Barren Eise (73)
Level
72 Helm Production Manual - Hadeis (70), Baby Ape (72), Little Scorpionmantis (78)
Level
97 Helm Production Manual - Archmage Quanian (132), Bloody Nail Golem (133)
Boots
Level
27 Boots Production Manual - Skeleton Soldier (21), Dark Goddess (22), Great Horn Beast (24)
Level
32 Boots Production Manual - Treant (26), Clever Fox of Desert (26), Blood Wolf (27), Desert Spider (29)
Level
37 Boots Production Manual - Red Spider (32), Berserker (34), Death Goddess (35), Bandit (35), Gnoll (36)
Level
42 Boots Production Manual - Brutal Deer of Desert (38), Gnoll Lancer (39), Spike Canine (40), Dire Spike Canine (41), Gnoll Soldier (41), Beast Archer (42), Two Headed Canine (43), Death Mask Lancer (44), Death Knight of Iris (52)
Level
47 Boots Production Manual - Death Mask Soldier (47), Beast Crawler (48)
Level
52 Boots Production Manual - Salamander Ruin (50), Rough Jaguar of Desert (51), Elite Rough Jaguar of Desert (51), Cerebrii (51), Akane Giant (53), Master of Secret Technique (57)
Level
57 Boots Production Manual - Akane Giant (53), Dragon (55), Master of Secret Technique (57), Wafe Debirch (58), Arcane Golem (59)
Level
62 Boots Production Manual - Wafe Peeler (60), Wafe Debirch Leader (62), Sphinx Fighter (63)
Level
67 Boots Production Manual - Elite Sphinx Fighter (63), Sphinx Speer Man (64), Wane Spider (67), Dark Bogle (67), Barren Eise (73)
Level
72 Boots Production Manual - Hadeis (70), Male Assassin Bug (70), Female Assassin Bug (72), Azer (76), Little Scorpionmantis (78)
Level
97 Advanced Boots Production Manual - Steel Nail Quanian (123), Flail Golem (124)
Thanks to:
Agent031474
Anjack
Avatarix
brunob
Bytesmee
Caideenah
ChixLittle
darridle
Datasurgeon
Doobius
filzonfire
FireyFly
great1nitin
GSYRob
hennajin
jamestont2
jaretlafoudre
Kyori
Lintu
LukaiRu
Luminous_Pie
MissChief
MissLara
morandir
OneWingedAngel_
orc_warhero
Pimorez
Quivver
rachelnolen
raistmajere
Ravensfate
Rodgan
Rosada
Sassifras
scorpio1183
SKiLL3D
Sunrays
tatiana1221
TheEraser
Veratas
Vivar
Why-Not-Me
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xXniniXx
Zaozen
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