Happy 4th of July! - 1900's Patriotic Young Women

I thought this early photograph, dated between 1900 - 1910,  to be particularly fitting for today's post.  It shows thirteen young women all dressed alike and each holding an American flag.  They are wearing white shirtwaist blouses with dark skirts and dark bows at the neck.  Most are wearing a version of the Gibson Girl hairstyle so popular at the time.  I wonder if they were appearing in a school function or community event for a holiday such as the Fourth of July? I guess I'll never know as this oversized, 7" x 9" cabinet card does not identify the subjects or the photographer.