These were in the photos that belonged to my grandmother, Edna Peterson Egli. Peter Peterson was my mother's maternal grandfather.
Peter is seen in the second column from the right Mom did not know why these unusual photos were taken or who any of the other people are. She thought it might be related to his job - perhaps they were his coworkers. He worked at the local grocery store.
One great thing to note about these pictures is that while most of the photos are rather serious, in the very bottom photo of each person, they are (for the most part) smiling.
The following photo is another mystery to me. While this picture is labeled signifying that Peter is in the photo -- standing second from the left -- they give me no clue as to why he is in the photo or what is going on. Theses men appear to be policemen but as far as I know, Peter was never a policeman.
And I feel certain someone will recognize what organization he belonged to in this third photo. Peter is in the middle row, far right. Peter was born in Denmark but he married a Swede and they attended a Swedish Lutheran church.
Anyone have any ideas about these photos? I'd love to learn more.