Source of mother-of-pearl
Source of moving fare
Source of much 1-Down
Source of much bell-ringing
Source of much blond hair
Source of much blonde hair
Source of much canine delight
Source of much chocolate
Source of much comforter filling
Source of much family friction
Source of much Germanic mythology
Source of much Indian tea
Source of much legalese
Source of much mutton
Source of much of English
Source of much of Google's income
Source of much talk
Source of much tea from Asia
Source of much website revenue
Source of much West Coast trade
Source of mulberries
Source of musk
Source of natural light
Source of natural pearls
Source of natural red food coloring
Source of needed dough
Source of needles
Source of net profits?
Source of net receipts
Source of new USN ensigns
Source of Niagara Falls
Source of nickel
Source of nicotine
Source of nondairy milk
Source of Norse mythology
Source of northern exposure?
Source of nuclear energy
Source of oater drumming
Source of oats
Source of obsidian
Source of ocean treasure, perhaps
Source of oil
Source of oil and food
Source of omega-3
Source of one's sense of balance
Source of opera financing
Source of oral-exam assistance
Source of orange-red light
Source of organic fuel
Source of ornamental plumes
Source of overhead images
Source of oxygen
Source of pain
Source of pain for a lion, per Aesop
Source of pain, in kidspeak
Source of pancake syrup
Source of paper profits
Source of paper profits?
Source of paper tigers
Source of particular irritation
Source of party gifts
Source of patronage jobs
Source of peas on earth?
Source of pecans and walnuts
Source of Pecorino cheese
Source of peeps
Source of pennies
Source of pep?
Source of perfection, so they say
SOURCE of perfume
Source of perspiration
Source of Peruvian wool
source of petroleum
Source of peyote
Source of PIN money?
Source of pink applesauce
Source of plane power
Source of pliable wood
Source of poi
source of poison
Source of pollution
Source of pop-ups?
Source of pork bellies
Source of possible harm
Source of potent buttons
Source of pound-and-a-half eggs
Source of power
Source of power for a golf swing
Source of power for many boats
Source of power from inside the earth
Source of praise in verse
Source of precedents
Source of pressure
Source of pressure for bicyclists
Source of pressure, at times
Source of pressure, maybe
Source of pressure, often
Source of pressure, perhaps
Source of pressure, to many teens
Source of pricey peanuts
Source of pride
Source of pride or honor
Source of problems
Source of profit
Source of profitable success
Source of profits
Source of prophecies
Source of prophecy
Source of prosecco wine
Source of protection
Source of protein
Source of protein in veggie burgers
Source of psychoactive agents
Source of pumice
Source of quick cash
Source of quick cash, briefly
Source of quote
Source of radio revenue
Source of radio waves
Source of rage, briefly
Source of rare metals, maybe
Source of raspberries, perhaps
Source of rays
Source of ready money
Source of rectangular lettuce?
Source of red blood cells
Source of red ink
Source of red or white
Source of refills
Source of regret, perhaps
Source of relief
Source of reminiscence
Source of resources
Source of retail profits
Source of retiree funds
Source of retiree income
Source of revenue for many states
Source of rice
Source of riches
Source of rings
Source of rings for frying
source of river
Source of river in the form of a spring
Source of Rockefeller money
Source of Rockefeller's wealth
Source of roe
Source of romantic petals
Source of roof noise
Source of rope fiber
Source of Roquefort cheese
Source of royal insomnia
Source of rubber
Source of ruin
source of rules for keeping kosher
Source of sake
Source of Sake Dish seasoned with
Source of Samson's strength
Source of sandwich seeds
Source of sap
Source of saturated fat
Source of sauce
Source of sauce or milk
Source of sauce to go with beef
Source of Scandinavian mythology
Source of scandium
Source of school stress
Source of seasonal color
Source of secondhand goods
Source of security
Source of Seoul food
Source of seven La Scala premieres
Source of shade
Source of shavings
Source of shells
Source of shower suds
Source of sibilance
Source of sign shine
Source of silky wool
Source of silver
Source of sisal hemp
Source of skin-softening oil
Source of slag
Source of smokes that are illegal in the U.S.
Source of snack seeds
Source of sodium for college students
Source of sodium from Keebler
Source of soft down
Source of soft fabric
Source of soft feathers
Source of soft wool
Source of softwood
source of soil used in varnishes
Source of solar energy
Source of solar power
Source of some '60s trips
Source of some aerial photos
Source of some allergic reactions
Source of some ambient radiation
Source of some annoying online messages
Source of some bangs
Source of some big waves
Source of some blasts
Source of some blowups
Source of some blues
Source of some brandy
Source of some bubbles
Source of some carbs
Source of some cats and carpets
Source of some clicking
Source of some clicks
Source of some coffee
Source of some crime
Source of some cruise ship beer?
Source of some cures
Source of some D.C. funding
Source of some discrimination
Source of some extracts
Source of some fertilizer
Source of some fevers
Source of some filings
Source of some flashbacks
Source of some fluff
Source of some food poisoning
Source of some foot-stomping
Source of some fruity pops
Source of some Genesis attire?
Source of some govt. checks
Source of some greens
Source of some hallucinations
Source of some health food store oil
Source of some highly prized 19-Acrosses
Source of some ice creams' crunch
Source of some inside info?
Source of some intolerance
Source of some issues?
Source of some leather
Source of some liver-based oil
Source of some long flows
Source of some lows
Source of some muddy footprints?
Source of some nectar
Source of some net receipts?
Source of some of the oil for 31-Down
Source of some omega-3s
Source of some overhead coverage
Source of some overhead footage
Source of some paper pulp
Source of some penetrating notes
Source of some plywood
Source of some pop-ups