George C.McCallum was my aunts flying partner. They formed a flying school in Alameda, California. His signature in this photo makes it look like they were just friends I don’t have a place or date when the picture was taken. Through research I found out that Vicky’s partner was a well-known pilot in the San Francisco Bay Area. He worked for Varney Airlines in the early 30’s.
I wish I knew more about this man but so far this is all I know.