Pencil drawing of rocky cliff faces, with field notes and color notations. Likely preparatory drawing for a diorama at the American Museum of Natural History.
Pencil drawing of rock cliffs, with field notes and color notations. Almost certainly created in preparation for a background for a diorama at the American Museum of Natural History, but the specific diorama has not been identified.
Pencil drawing of rock cliffs, with field notes and color notations. Almost certainly created in preparation for a background for a diorama at the American Museum of Natural History, but the specific diorama has not been identified.
