My opinion....
50's cards soak well. Excess paper should release and float in 10 minutes or less IF the glue used was water based back when they were pasted into the scrapbook. I would not hesitate trying it, but you need to submerge the whole card in distilled water and then dry it at an even rate between paper towel, changing them out frequently early on when the card is the dampest. I've had great success with 53-57 Topps & Bowman cards in the past. If you're still hesitant, send them to an experienced Net54 member and we can give them a try. Hope this helps!
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