|Image from Laughton's Blog|
You may have seen R Laughton posting comments on several blogs - he is a reader who was inspired to start his own blog focusing on his interest in sumo cards. Read his first post to see why this will end up being the most informed, helpful sumo card resource on the net. Ryan literally wrote the book on sumo cards.
Now, I know what you're saying. Sumo just isn't your sport. And I'll agree with you there. But when it comes to vintage cards, what sport is featured (or if there's a sport at all) doesn't matter so much - the cards are just really interesting to see and learn about. So give his blog a try. At the time of this writing, he has three posts published. I don't collect sumo cards and I'm already jealous of his collection! I'll probably have to start picking up some of these awesome cards when I get the chance.