topic

• Intellectuals8
• Authors, American7
• Naturalists7
• Upanishads and science1

name

• Thoreau, Henry David, 1817-18627
• Anquetil-Duperron, M. (Abraham-Hyacinthe), 1731-18051
• Emerson, Ralph Waldo, 1803-18821

collection

• Henry David Thoreau collection7
• Ralph Waldo Emerson collection of papers1

place

• United States8
• Chicago (Ill.)3
• Concord (Mass.)2
• Providence (R.I.)2
• Fond du Lac (Wis.)1

genre

• Correspondence8

division

• Berg Collection8

type