View of a card advertising Semet-Solvay coke, sold by Buchanan & Huff. Card depicts a young girl writing on a chalkboard. Printed on front: "Here's a lesson in economy. The heat you want costs less with Semet-Solvay coke. But it from Buchanan & Huff, 5600 Wabash Ave., Detroit, Mich. Garfield 3764. Printed in U.S.A."
