I’m not a Catholic, so not 100% sure, but I believe these are pictures of children on their First Communion ceremony. The little girls are all in white dresses with cloaks, hats, and veils. The little boys walking in a line and wearing ruffled tops and knickers. There’s a Coca Cola sign in the background, and you can see the nun with the girls. The last picture is of a nun with a man, maybe the girl’s father.
These pictures were stuck to the page, so I just scanned them as is.