Here we have a group of girls apparently in their costumes for a pageant at Tallman School. I think this is probably the cast (or part of the cast) posing for a photo, and not the actual performance of the pageant. It looks like this must have been springtime, both from the apparent weather and from the fact that there are butterflies in the pageant.

Mom is second from left in the back row (behind the girl who is to the right of the butterfly on the left). Aunt Betty is in the front row on the right. Because of the format of this image, I suspect you’ll want to click/tap on it to bring up the enlarged version that you’ll be better able to zoom into.

The butterfly costumes are easy enough to identify. I don’t have a guess what the girls with white strips dangling from their sleeves are intended to represent, or if the dresses the other girls are wearing have particular significance.

Mom’s caption for this photo says it was taken in “1923 or 24.” I think it must have been 1924 if this was indeed in the spring, because I don’t think Aunt Betty would have been in school yet if it had been 1923. In spring 1924, Aunt Betty would have been in first grade and Mom would have been in eighth grade.