Clason's Minnesota Green Guide, 1930s. Material: paper. Size: 4" x 6 1/4" Description: Minnesota booklet - gray paper cover - green and black printed information across front: "Clason's Minnesota Green Guide" - 48 pages of information and photographs about Minnesota; information includes natural resources, tourism promotion, logs of auto routes and main route pole markings; lists of principle lakes, educational and state institutions, railroads, counties; index of cities and towns with populations listed.