This seems to show a group of people taken indoors which a flash light. The pictures had quite a strong red colour cast which I tried to remove in lightroom after scanning. I wonder it the film was daylight balanced and the flash used warmer colour light? Anyway, there is still a bit of an orange tint to the pictures which is difficult to remove.
This is the first of a series of pictures of the same family which may or may not be connected to a set of pictures of a wedding which were also on 127 medium format film. Some of the hand writing on the slide frames looks similar, but that may just be coincidence.