The main power generators pic is from this card:
http://www.swccgpc.com/cards/hoth/ls/hothmainpowergenerators.gif
I have the card and can scan it in as a PNG image in whatever resolution you would need...ie...600, 1200, 2400....
By the way, the card game is still being played and I am involved in the committee. I can also ask if they have the original image.