1970's Gratiot catalog. Gratiot had 7 stores in the Michigan area plus mail order. Amazing how many companies and speed shops where selling speed equipment back in the day. I grew up in a rural area of around 5000 people and lived within a town of around 50k and there were at least 15-20 places that sold speed equipment back in the day.Everything from speed shops,department stores(JC Penny and Harts), auto parts stores etc.
All of these places are gone for the most part. Really tells you how much is going out the doors of Summit and Jegs every year doesn't it?