Many years ago, probably in the early 90s or late 80s I went to the LOC to do the same thing. I had heard you could read old comics. I actually was able to make black and white copies of a bunch of them. At the time, it was Junior, Phanton Lady, etc. I actually held Thunda #1 in my hands(I think). I still have them somewhere, like 15 or 20 black and white copies of comics I scanned there. Some of them were starting to fall apart as I laid them on the flatbed scanner. If I remember right I had to pay to scan them. I'm going to see if I can relocate them.