Losing Track of The Decades

I'm pretty sure I was the one who took the above photograph of (from left to right) my father Nelson, mother Mary, Aunt Elsie, and Uncle Bill (my mother's brother).  For a while, however, I wasn't sure where or what decade it was taken in. At first I thought it was taken on the golf course down in Stuart, Florida, where they all retired to beginning in the 1970s.  However, upon further inspection, I realized it was taken on a golf course in Ontario during the early 1960s, when both our families spent two weeks each summer at Torpitt Lodge, located on the shores of Sparrow Lake.  The older I get, the easier it is to be a few decades or so off in you recollections.  Not to mention how easy it is now to confuse Ontario and Florida.  After all, they are both in North America, right?