Yes I was that guy walking around with a blank ball under my arm at ballard locks -some people may be wondering why when there's no blank around the area -strangely after visiting the locks visitor center I came out and there was a brand new blank ball sitting right there on the sidewalk.
I looked around at all the people there and asked "Is this your ball is this your ball ?" everybody said NO so I picked it up and walked around thinking maybe I'd see a family or people who forgot their new ball and they'd say "Hey, that's our ball " -but nobody did .
SO I just walked back to my car with it. If you lost your ball and can identify it -let me know & you can have it back π