This group of photos all come from one party. We don't have an exact date, but it's certainly not prior to 1949. How do we know this? Well, a couple of the images show a boy in a TV costume with the name Channel 4 WGAL written on it. A quick Google shows the station didn't start until March 1949 so the photos can't be earlier. In fact I think the dress looks a bit older, mid 1950s perhaps?
I'm guessing it's a school party, it looks like a school hall with lots of teachers around. It also looks like there's interviews going on, maybe for the radio or indeed for the TV station WGAL, which would explain why the one boy is dressed like a TV with their name on it. There's a whole range of great stuff in these photos, strange masks, stern looking teachers / adults, vintage decorations and more. Take a look!
Looks like a racial pic to me