Hello,
My name is Bonnie Guerra McLean and though I don't know that these pictures belong to Campo family I do know that Maria Eugenia Campo was a name with these pictures. I believe they belonged to a lady named Estela but unsure of last name. Most pictures were addressed to her and my father found this picture book when he was child/teen and hoped to find the owner but over the years has forgotten until my research for my family tree stumbled over them. They date from the late 40s to late 50s and some names listed are (with no surname): Aida, Estella, ?Beatriz?, ?Olgusta?, --Sylvia ?Figueroa?, Maria Eugenia Campo M.