Feeling Nostalgic

I've had this box of pictures that I've carried around with me for a few years now, maybe even since I went to UNT. Mom never put them into albums b/c she's not really into that kinda thing. She even has this huge drawer full of pictures. I've started putting my box of pics into a scrapbook and trying to write down things that I remember about that picture/event. So...here's one that I love b/c my brother and I used to have so much fun playing with this set Dad made for us.
So Mom, if you see this, will you let me know what year this may have been? Not too much going on around here. Just enjoying the spring weather when there aren't any Tornado Warnings!