Medal of the Gouffre de Padirac, year 2017, Gouffre de Padirac, Arthus Bertrand

Rubber, pen-drawn portrait of Edouard Alfred Martel, Gouffre de Padirac

The Gouffre de Padirac described to children, tests quizz, riddles, éditions La Petite Boîte, English

Comics - Trilogy - Gouffre de Padirac Editions Glénat - French

Comics - Edouard-Alfred Martel's amazing discovery - Part 1 - Gouffre de Padirac Editions Glénat - French