| Description | Photographs of Archaeopteryx fossils, and of a feather found in Lerida, Spain; plus memoranda and letters concerning the fossils; a list of the images used in De Beer, Archaeopteryx Lithographica, (London: British Museum; 1954); and an offprint of Luis Ferrer Condal, "Notice prliminaire concernant la prsence d'une plume d'Oiseau dans le Jurassique suprieur du Montsech (Province de Lerida, Espagne)", Acta XI Congr. Int. Orn, 1955. |