Source of some quilt stuffing
Source of some reactions
Source of some resins
Source of some retirement income
Source of some rings
Source of some roe
Source of some rushes
Source of some Russian copper
Source of some salt
Source of some scars
Source of some scriptures
Source of some seeds
Source of some shadows, for short
Source of some slicks
Source of some sound bites
Source of some South American wool
Source of some sprays
Source of some spring color
Source of some stings
Source of some stomachaches
Source of some strange visions
Source of some strange visions, for short
Source of some street clatter
Source of some students' stress
Source of some sugar
Source of some swelling
Source of some syrup
Source of some tadpoles
Source of some tears
Source of some tears in the kitchen
Source of some teen angst
Source of some temporary tattoos
Source of some TV content
Source of some tweets
Source of some urban pollution
Source of some USAF leaders
Source of some vinegars
Source of sordid details
Source of Souls
Source of sound advice
Source of spam
Source of sparkling wine
Source of spices for old traders
Source of spills on hills
Source of split-resistant wood
Source of sports news
Source of spousal angst, nocturnally
Source of spray
Source of springtime stress for a H.S. student
Source of spumante wine
Source of spy movie suspense
Source of start-up cash, perhaps
Source of statements
Source of stats
Source of status
Source of steadiness
Source of steam
Source of steel
Source of steel block fool contaminated with copper
Source of sticker shock
Source of sticker shock?
Source of stocks or bonds
Source of stone used to build the ancient Egyptian pyramids
Source of straw
Source of streaming video
Source of strength
Source of stress for a returning vacationer
Source of stress for new parents
Source of stress, probably
Source of strip steaks
Source of sudden understanding
Source of sudden wealth
Source of suds
Source of sugar
Source of Sun. inspiration
Source of Sun. light?
Source of Sunday music
Source of Supergirl's powers
Source of support
Source of sweat
Source of sweet sap
Source of syrup
Source of T-bones
Source of tapioca
Source of teak
Source of teen pressure
Source of teenage self-consciousness
Source of temporary funds
Source of temptation
Source of tequila
Source of the "package" that traverses the grid via the starred answers
Source of the advice
Source of the all-time best-selling movie-related toy line
Source of the Amazon
Source of the Amazon burrower
Source of the Beverly Hillbillies' wealth
Source of the brachiocephalic trunk
Source of the delicacy tomalley
Source of the Ewing fortune
Source of the fairy-tale sequence that creates four long puzzle puns
Source of the first spare rib
Source of the fleece found by 105 Across
Source of the food thickener alginate
Source of the freedoms found at the ends of this puzzle's four other longest answers
Source of the Getty fortune
Source of the Golden Fleece
Source of the headline "Study Finds Blame Now Fastest Human Reflex," with "The"
Source of the headline "World Death Rate Holding Steady at 100 Percent," with "The"
Source of the heart stimulant digitalis
Source of the Hulk's power
Source of the idioms "fat of the land" and "fire and brimstone"
Source of the Las Vegas glow
Source of the Law
Source of the line "Blessed are the meek: for they shall inherit the earth"
Source of the line "Each of us bears his own Hell"
Source of the line "Frailty, thy name is woman!"
Source of the line "Hope springs eternal ..."
Source of the line "If this is the best of all possible worlds, what are the others?"
Source of the line "Let us not speak of them, but look, and pass on"
Source of the line "Madness in great ones must not unwatch'd go"
Source of the line "Man does not live by bread alone": Abbr.
Source of the line "Midway upon the road of our life I found myself within a dark wood ..."
Source of the line "Something wicked this way comes"
Source of the line "The Leaves of Life keep falling one by one"
Source of the line "The Lord is thy keeper"
Source of the line "The meek shall inherit the earth"
Source of the line "There is no one alive who is you-er than you!"
Source of the line "They have sown the wind, and they shall reap the whirlwind"
Source of the line "They shall beat their swords into plowshares"
Source of the line "Thy money perish with thee"
Source of the line "What's done is done"
Source of the line "What's past is prologue," with "The"
Source of the long word made from the starts of eight Across answers in this puzzle
Source of the Mac's operating system
Source of the Mekong River
Source of the milk for pecorino Romano cheese
Source of the most widely used metal
Source of the music for a 2001 theatrical hit
Source of the Niagara
Source of the Niagara River
Source of the phrase "brave new world," with "The"
Source of the phrases "cakes and ale" and "milk of human kindness": Abbr.
Source of the pink in pickled turnips
Source of the Po
Source of the quote
Source of the quote "Change is certain"
Source of the quote in 6-Across
Source of the robe material for Incan royalty
Source of the Romance languages
Source of the sample in Jay-Z's "Hard Knock Life (Ghetto Anthem)"
Source of the saying "Brevity is the soul of wit"
Source of the saying "It is more blessed to give than to receive"
Source of the saying "The gods help them that help themselves"
Source of the six longest Across answers in this puzzle
Source of the Tigris and Euphrates, per Genesis
Source of the title "Tender Is the Night"
Source of the title material in "Weird Al" Yankovic's "The White Stuff"
Source of the Trojan horse story
Source of the Truckee River
Source of the word 'algebra'
Source of the word "admiral"
Source of the word "alcohol"
Source of the word "avatar"
Source of the word "clan"
Source of the word "galore"
Source of the word "karma"
Source of the word "khaki"
Source of the word "kiwi"
Source of the word "mantra"
Source of the word "robot"
Source of the word "trousers"
Source of the word "whiskey"
Source of the words "curry" and "pariah"
Source of the words "mamba" and "chimpanzee"
Source of the words "mulligatawny" and "catamaran"
Source of the words "O, beware, my lord, of jealousy; / It is the green-ey'd monster ..."
Source of the words "zenith" and "nadir"
Source of thorns
Source of ticking
Source of timber and shade
Source of tin's chemical symbol
Source of tofu
Source of tomatoes for homemade sauce
Source of tomorrow's lunch, perhaps
Source of Toothflix DVDs
Source of toro
Source of tradition
Source of trendy health juices
Source of tricks?
Source of trouble
Source of troubles
Source of tunes for some commuters
Source of turpentine
Source of TV laughs for 30 years
Source of TV revenue
Source of TV, slangily
Source of tweets
Source of tweets ... or growls
Source of twigs called withies
Source of Ulee's gold
Source of ultraviolet rays
Source of unexpected problems
Source of unforeseen trouble
Source of unrest
Source of unwelcome feedback, informally?
Source of unwelcome strains
Source of urban pride
Source of valuable deposits
Source of valuable eggs
Source of valuable matter
Source of valuable metal
Source of vegan protein
Source of vegetable fuel
Source of vegetable protein
Source of Venanzite
Source of venison
Source of venom
Source of veritas
Source of very soft wool
source of vexation
Source of Vibranium in the Marvel universe
Source of vigor
Source of vitamin C
Source of vitamin D
Source of volcanic glass
Source of warmth
Source of water
Source of water during shortage
Source of water power?
source of water with natural pressure
Source of waves at sea
Source of wealth
Source of weather upheaval
Source of website revenue
Source of white plumes
Source of widespread devastation
Source of wild laughter?
Source of Wile E. Coyote's Dehydrated Boulders
Source of Will Rogers' info
Source of William the Conqueror's Tower of London stone
Source of windiness, maybe?
Source of winter coats
Source of wisdom
Source of wood for baseball bats
Source of woodchips, often
Source of wool
Source of worry
Source of yard sale items, perhaps
Source of yellow dye
Source of zest