I guess I must have still been on a sugar high--took me 13 seconds to spot the '52 Topps, but a tsch less to spot your Stahl-Meyers!
Chris, now I know what you've been up to all weekend!
You know, Lionel Carter favored using scrapbooks to mount his cards. Perhaps try making a chronological run of your Mantle collection mounted in thick black paper scrapbooks using the gummed black art corners. You could use various kinds of mylar and poly sleeves, snugs, semi-hard holders to protect the card or photo, while giving each piece its own space of display and "room to breathe" among the others. You could research each piece, providing its own identification and background story of the set from whence it came, as well as how you acquired it (though this last item may be only of interest to yourself, and your heirs).
Just a thought, my friend. This would make them easier to enjoy viewing, still one at a time, with each item having its own page or even two-page spread. After all, you ARE a Mickey Mantle specialist. The scrapbooks would even make for an easy guided tour to your collection, and you could then still select what you wish to show your guest.
As for the cards that are TPGed; well, there are three-ring devices that hold cards, but it would obviously have to be thought through carefully. It can be done. Lionel used to remove every other sheet from his scrapbooks to allow enough room for the thickness of the cards and the mounts, so as to prevent the scrapbooks from fanning out.
Anyway, just my 50 cents worth of advice. Hope you're able to get every Mantle back without a ......... .
Take care, my friend. Respectfully, Brian Powell