Dream Valley - A Collector's Guide to My Little Pony This is where I got all of my information on the G1 ponies in my collection and the ones on my wishlist.
Where the Rainbow Ends - My Little Pony This is where I found information about the G3 ponies on my wishlist.
MLP Land This is another website where I found information on G3 ponies, except I think this is the one I used when getting information on the ponies in my actual collection.