For many years, the Solnhofen deposits were the only source of lithographic limestone, but shortly before 1867, quarries were opened in France near le Vigan, Gard and Cerin and Crey, Isère.
The Solnhofen deposits were the only source of lithographic limestone. This was for many years. Quarries were opened in France near le Vigan, Gard and Cerin and Crey. This was shortly before 1867. Crey was Isère.