Ok, so you guys got me motivated.
http://dashaka.com/danstuff/nescovers/
In that link are scans of the covers, backs, and carts of the following missing games.
1-Big Nose the Caveman
2-Double Dare
3-Firehawk
4-Golf Grand Slam
5-KidKool
6-Klashball
7-Legends of the Diamond
8-Michael Andretti World GP
9-Mission Cobra
10-Quattro Sports
11-Roundball
12-Sesame Street ABC & 123
13-Sesame Street Countdown
14-Stanley the Search for Dr. Livingston
15-Starship Hector
16-Super Team Games
17-Treasure Master
18-Twin Eagle
19-Ultimate Stuntman
20-Videomation
I hope this helps 
Cool, they are a little on the small side.. If you scanned these, if you could re-scan with a high DPI, that would be awesome! We need at least 300DPI, if not higher. Also, we need the spine images as well.. You can stack them all together on their sides and scan them all at once if that works.
The absolute best quality scans come when you can de-construct the box and lay it flat on the scanner. Then use a heavy piece of cardboard or a book (I use a DVD Box Set) to help keep it flat against the glass of the scanner.
You also need to turn on "De-screen" or "Moire Removal" to help keep the images clean.
Any you could do would help immensely!
