Here are Many of the master writs. I have listed ranges of rewards that I noted.

enchanting 2-7 vouchers
wood 2-10 with one at 63
provisioning 2 vouchers
clothier 2-18 vouchers
blacksmith 5-34 (34 was one of the many, one uber high reward at 217 which may or may not be an error)
alchemical 2-5 vouchers

***** The writ crates are given when you create a new toon. So create a new one, open the crates and read what they are for yourself if you wish. *****
I believe mine were in my inventory.
Here are the ones I had time to type out:

craft a stealth draining poison IX with - cowardice, increase spell resist, detection 2 writ vouchers

craft rubedite gauntlets - legendary, divines, twilight embrace, imperial style - 21 writ vouchers.

craft rubedite cuirass, epic, nirn, twilight embrace, xivkyn, 32 vouchers

essence of rav stam - vitality, increase armor, rav stam 5 vouchers

essence of ravage health with breach, increase spell power, rav health, 5 vouchers

rubedite mace - legendary, charged, eternal hunt, dark brotherhood, 25 vouchers

rubedite mace - epic, powered, alessia's bulwark, orc 5 vouchers

rubedite maul, legendary, nirn, tava's favor, skinchanger, 257 vouchers (error?)

rubedite helm, legendary, reinforced, hist, khajiit 19 vouchers

rebedite cuirass, legendary, reinforced, kvatch gladiator, barbaric, 20 vouchers

rubedite greatsword, epic, decisive, twilight's embrace, breton 5 vouchers

rubedite mace - epic, sharpened, hundings, dwemer, 6 vouchers

rubedite helm, epic, nirn, song of lamae, outlaw 34 vouchers

rubedite gauntlets, epic, divines, song of lamae, orc 5 vouchers

rubedite cuirass, legendary, impen, song of lamae, yokudan, 23 vouchers

rubedite maul, legendary, nirn, ashen grip, redguard, 217 vouchers (wha???)

ancestory silk hat - legendary, divines, varen's legacy, primal 18 vouchers

rubedo leather bracers, legendary, divines, julianos, outlaw, 18 vouchers

rubedo leather bracers, epic, prosperous, hunding's rage, thieves guild, 2 vouchers

rubedo leather jack, epic, training, eternal hunt, celestial 3 vouchers

ancestory silk sash, legendary, prosperous, twilight, glass 19 vouchers

ancestor silk hat, epic, well fitted, seducer, dunmer 2 vouchers

rubedo leather arm corps, epic, divines, julianos, order of the hour, 3 vouchers

ancestory silk breechers, legendary, training, song of lamae, aldmeri dominion 19 voucher

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did not see voucher rewards on these

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Craft ravage health potion with following traits:
- gradual ravage health, ravage heath, ravage stamina (progress is 20)

Masterful Feast:
Craft witherd tree inn venison - progress is 8
craft orzorga's red frothfar - progress is 8

1 superb glyph of stamina epic quiality

craft ruby ash healing staff with following properties:
epic, precise, eternal hunt, soul shriven style

craft a rubedite dagger with following properties:
epic, training, night's silence, skinchanger style

craft a rubedo leather jack with the following properties:
legendary, prosperous, whitestrake's retribution, assassin's league style

Materful Feast
orzorga's triple trifle pocket progress 8
lusty argonian maid mazte progress 8

1 legendary superb health enchant

rubedite greatsword legendary, defending, oblivion's foe, daggerfall covenant style

ruby ash frost staff legendary, defending, oblivion's foe, yokudan style

ancestor silk gloves legendary, reinforced, trial by fire, thieves guild style

Craft an escapist's poison IX with the following traits:
unstoppable, restore magicka, spell critical (progress total is 20)

craft a damage magicka potion IX with the following
lingering health, restore health, ravage magicka, progress 20

craft a longfin pasty with melon sauce - craft 8 actually
craft a velothi view vintage malbec - craft 8 actually

craft an epic superb glyph of shock resist

craft a ruby ash shield - epic, training, song of lamae, breton style

craft a rubedit maul - epic, decisive, shalidor's curse, bosmer style

craft ancestory silk hat - legendary, sturdy, kagrenac's hope, yokudan style

craft a speed draining poison IX with the following traits: increase weapon power, speed, restore stamina (progress is 20 total)

craft a jugged rabbit in preserves (progress is 8 total)
craft a velothi view vintage malbec (progress is 8 total)

craft a truly superb glyph of pison epic

craft a ruby ash lightning staff - legendary, nirnhorned, ashen grip, mercenary style

craft a rubedite mace - legendary, infused, twice-born star, dark brotherhood style

craft a rubedo leather helmet - legendary, prosperous, song of lamae, khajiit style

Craft an essence of immovability with the following traits - unstoppable, restore mag, restore health (progress 20)

craft an orzorga's smoked bear haunch (progress 8 - this one requires perfect roe IIRC)
craft an orzorga's red frothgar (progress is 8)

craft a truly superb glyph of bashing legendary

craft a rubedite pauldron - epic, reinforced, redistributor, glass style

craft a ruby ash shield - legendary, impenetrable, noble's conquest, yokudan style

craft a rubedo leather jack - legendary, proposterous, twice born star, outlaw style

craft an essence of ravage health with enervation, fracture, ravage health - progress is 20

craft a capon tomato-beet casserole progress is 8
craft a psific ambrosia, progress is 8

craft a truly superb glyph of decrease physical harm epic

craft a rubedite girdle - legendary, well fitted, armor master, celestial

craft a ruby ash bow, epic, sharpened, clever alchemist, yokudan

craft a rubedo leather belt with the following - epic, impenetrable, julianos, ancient elf style

craft damage health poison IX with - increase weapon power, speed, ravage health (progress 20)

craft orzorga's blood price pie progress 8
craft lusty argonian maid maste progress 8

craft truly superb glyph of decrease physical harm epic

craft rubedite pauldron - epic, reinforced, song of lamae, draugr

craft ruby ash bow - legendary, decisive, seducer, ancient elf

craft rubedo leather belt - epic, proposterous, tava's favor, dwermer

These are not all of them. There were many more, but you get the idea.