Richebourg, 1879 (published), Photoglyph of a quarry with descriptions of layers [CarriÞre d'Argile Plastique] (edited detail), [Carte géologique détaillée de la France, Feuille 48.- Paris - Annexes. Perspectives Photographiques. Pl. III], Photoglyph, detail, edited, Northern Light Gallery, LL/41074
Richebourg 1879 (published) Photoglyph of a quarry with descriptions of layers [CarriÞre d'Argile Plastique] (edited detail) [Carte géologique détaillée de la France, Feuille 48.- Paris - Annexes. Perspectives Photographiques. Pl. III]