I don't think those are all that inexplicable. 5 (and 30 and a lot of the rest) is obvious circus related--Fat Man and Midget. (Is it appropriate to use "Little Person" in that context? I bet she was advertised as a Midget, and lorded it over the dwarves...) 10 is Christmas Eve in the Alps and Krampus. Some of the other costumed stuff might be like that, others are obviously college prank sort of things. It's possible that the skeletons are collegiate (anatomy classes) as well. Or maybe it was simply a thing to be photoed with one back then. How many people on this board would do the same if given the chance now? Not zero. 42 looks like some sort of scouting thing. 13, I'm not sure what it means, but the word "rubber" reminds me that in that era rubber was a very hot commodity indeed (and with the human rights violations to prove it.)
The Lady with a Lamprey
"The powerful are exploiting people, art and ideas, and this leads to us plebes debating how to best ration ice.
Man, no wonder they always win....." Lonesomebri
Get a Taint, you pathetic cur!