All Items 2 Collection 1 Archives & Special Collections 2 Contributor 1 Hitchcock, Orra White, 1796-1863 2 Topic 3 Formations (Geology) 2 Geological cross sections 2 Stratigraphic correlation 2 Format 1 Pen and ink on linen 2 Part Of 1 Orra White Hitchcock Classroom Drawings 2 Genre 2 Cross sections 2 Geological maps 2 Subject 3 Formations (Geology) 2 Geological cross sections 2 Stratigraphic correlation 2 Orra White Hitchcock drawing of valleys Hitchcock, Orra White, 1796-1863 One of 61 drawings done by Orra White Hitchcock for use in Professor Edward Hitchcock's classes on geology and natural history. Orra White Hitchcock drawing of valleys Orra White Hitchcock drawing of epochs of elevation Hitchcock, Orra White, 1796-1863 One of 61 drawings done by Orra White Hitchcock for use in Professor Edward Hitchcock's classes on geology and natural history. Orra White Hitchcock drawing of epochs of elevation
