Some time ago I was able to get my hands on some new old stock purple Federal paper 16 gauge shells. Loaded with a light charge of Unique the fired empties erase 60 years. I start every bird season with a pocket full of these shells. The next most enduring smells that erase the years and brings back memories of days gone by are walking into a saddle shop with the aroma of fresh leather and the smell the tac room of a horse barn with the smell of horses mingled with neatsfoot oil and fresh prairie hay. What memories they stir.