Found the answer key! 7 Dwarfs with Snow White is correct (was a typo). Here's the complete list w/answers:
7 W of the AW 7 Wonders of the Ancient World
1,001 AN 1001 Arabian Nights
12 S of the Z 12 Signs of the Zodiac
54 C in a D (with the J) 54 Cards in a Deck (with the Jokers)
9 P in the SS 9 Planets in the Solar System
88 PK 88 Piano Keys
13 S on the AF 13 Stripes on the American Flag
32 D at which WF 32 Degrees at which Water Freezes
18 H on a GC 18 Holes on a Golf Course
90 D in a RA 90 Degrees in a Right Angle
9 J of the SC 9 Judges of the Supreme Court
10 D in a TN (incl. the AC) 10 Digits in a Telephone Number (including the Area Code)
7 D with SW 7 Dwarfs with Snow White
2 H are BTO 2 Heads are Better Than One
3 F in a Y 3 Feet in a Yard
31 F of BRIC 31 Flavors of Baskin Robbins Ice Cream
36 I in a Y 36 Inches in a Yard
9 S in T.-T.-T. 9 Squares in Tic-Tac-Toe
50 S on the AF 50 Stars on the American Flag
5 T on a C (incl. the S in the T) 5 Tires on a Car (Including the Spare in the Trunk)
200 D for PG in M 200 Dollars for Passing Go in Monopoly
8 S on a SS 8 Sides on a Stop Sign
3 BM (SHTR!) 3 Blind Mice (See How They Run!)
4 Q in a G 4 Quarts in a Gallon
24 H in a D 24 Hours in a Day
1 W on a U 1 Wheel on a Unicycle
5 D in a ZC 5 digits in a Zip Code
57 HV 57 Heintz Varieties
11 P on a FT 11 Players on a Football Team
1000 W that a P is W 1000 Words that a Picture is Worth
29 D in F in a LY 29 Days in February in a Leap Year
64 S on a C 64 Squares on a Checkerboard
40 D and N of the GF 40 Days and Nights of the Great Flood
20 Q (A., V., or M.) 20 Questions (Animal, Vegetable or Mineral)
10 LI 10 Little Indians
7 Y of BL for B a M 7 Years of Bad Luck for Breaking a Mirror
2000 P in a T 2000 Pounds in a Ton
4 S on a V 4 Strings on a Viola
52 W in a Y 52 Weeks in a Year
111 E in the PT 111 Elements in the Periodic Table
1 GL for M 1 Giant Leap for Mankind
144 U in a G 144 Units in a Gross
9 L of a C 9 Lives of a Cat
206 B in the HB 206 Bones in the Human Body
1760 Y in a M 1760 Yards in a Mile
5280 F in a M 5280 Feet in a Mile
4 S in a D of C 4 Suits in a Deck of Cards
16 O in a P 16 Ounces in a Pound