Lost relatives from Pennsylvania

I've been traveling as well as working on a special World War II letter project so don't have my usual ancestor timeline prepared this week. So instead, I'll share three photos from the collection of my husband's grandmother, Bertha Edna Smith. The children and young men in these photos are unknown to me. They were more than likely friends and/or family members of Bertha's and probably lived in or near Apollo, Armstrong County, Pennsylvania. If not, Apollo, then in Westmoreland County, Pennsylvania. I estimate the photos were taken in the early 1900s to 1915. If you recognize anyone in these photos, I'd love to hear from you.