Well it could be random. Go on to Pokebeach.com an you can see all the Pokemon card scans ( all of the Pokemon pictures of the cards, incloulding the old ones)Hope this helps! Also people sell them...
There are several versions of "old Pokemon cards". The oldest, with only older Pokemon such as Pidgy or Charmander, is a blocky, one color one element format. That is NOT allowed. The other version...
to get Pokemon cards, you buy them at card places, at a dollar store, at Cole's, anywhere. Try Rivals. They have Japanese feraligator and quilava. They also have dragonite EX, and several rare LV.X...