| Source of the Las Vegas glow | 28 |
| Source of the Mekong River | 26 |
| Source of the Mississippi | 25 |
| Source of the Niagara River | 27 |
| Source of the one-liner | 23 |
| Source of the Owl Creek? | 24 |
| Source of the quotation | 23 |
| Source of the Truckee River | 27 |
| Source of Toothflix DVDs | 24 |
| Source of trans-fatty acids | 27 |
| Source of Trojan trouble | 24 |
| Source of Ulee's gold | 25 |
| Source of unexpected problems | 29 |
| Source of unforeseen trouble | 28 |
| Source of valuable deposits | 27 |
| Source of vegan protein | 23 |
| Source of vegetable protein | 27 |
| Source of very soft wool | 24 |
| Source of vitamin A (var.) | 26 |
| Source of voltage: Abbr. | 24 |
| Source of water power? | 22 |
| Source of waves at sea | 22 |
| Source of weather upheaval | 26 |
| Source of wild laughter? | 24 |
| Source of withdrawal visions | 28 |
| Source of woodchips, often | 26 |
| Source with 600,000 words | 25 |
| Source, as of information | 25 |
| Sources for college funding? | 28 |
| Sources for maple syrup | 23 |
| Sources in a modern bibliog. | 28 |
| Sources of a cosmetics oil | 26 |
| Sources of ambiguous answers | 28 |
| Sources of ancient counsel | 26 |
| Sources of annoying wind | 24 |
| Sources of archers' bows | 28 |
| Sources of archery bows | 23 |
| Sources of baseball bats | 24 |
| Sources of blue eyes, say | 25 |
| Sources of cabinet wood | 23 |
| Sources of chronic annoyance | 28 |
| Sources of college funding? | 27 |
| Sources of comforting heat | 26 |
| Sources of Davy Crockett hats | 29 |
| Sources of durable wood | 23 |
| Sources of elastic wood | 23 |
| Sources of Eve's leaves | 27 |
| Sources of filets mignons | 25 |
| Sources of fine-grained wood | 28 |
| Sources of formic acid | 22 |
| Sources of free drinks | 22 |
| Sources of frustration | 22 |
| Sources of government waste | 27 |
| Sources of great wealth | 23 |
| Sources of help on the WWW | 26 |
| Sources of hurt feelings | 24 |
| Sources of igneous rock | 23 |
| Sources of info on the web | 26 |
| Sources of inside info? | 23 |
| Sources of inspiration | 22 |
| Sources of instinctive energy | 29 |
| Sources of investment advice | 28 |
| Sources of iron and manganese | 29 |
| Sources of lanolin-free wool | 28 |
| Sources of light or heat | 24 |
| Sources of local produce | 24 |
| Sources of mother-of-pearl | 26 |
| Sources of moving music? | 24 |
| Sources of nickel, e.g. | 23 |
| Sources of on-line help | 23 |
| Sources of online help | 22 |
| Sources of orders, briefly | 26 |
| Sources of overhead costs? | 26 |
| Sources of paper or pepper | 26 |
| Sources of pollen grains | 24 |
| Sources of prized pelts | 23 |
| Sources of rare cuts, often? | 28 |
| Sources of red berries | 22 |
| Sources of reel income | 22 |
| Sources of remote power, e.g. | 29 |
| Sources of romantic conflict | 28 |
| Sources of rowdy criticism | 26 |
| Sources of satisfaction | 23 |
| Sources of scarce teeth | 23 |
| Sources of Scottish streams | 27 |
| Sources of Sheffield shade | 26 |
| Sources of soft feathers | 24 |
| Sources of some allergies | 25 |
| Sources of some discounts | 25 |
| Sources of some DNA samples | 27 |
| Sources of some energy | 22 |
| Sources of some Grimm tales | 27 |
| Sources of some highlights | 26 |
| Sources of some leather | 23 |
| Sources of some pit squeaks | 27 |
| Sources of some tweets | 22 |
| Sources of storage chest wood | 29 |
| Sources of track reports | 24 |
| Sources of unpleasantness | 25 |
| Sources of world views? | 23 |