Where did Rosie get her curls?

This question has come up many a time, since, for those of you who know AJS and I, we both have very straight hair and Rosie has curly-curls.

Here's a 1940s era photo of my Uncle Bob and Aunt Dot at a Connecticut swimming hole. Later in life, Dot wore her hair very short, so I didn't know it was curly; however, this old photo may reveal at least one genetic source of curls!

Well, really, I just wanted an excuse to post some old family photos that I scanned. :-)