Alfred Riggs Ferguson

• Edward Rowland Sill
• Emerson's Nature
• The Collected Works of Ralph Waldo Emerson
• The Collected Works of Ralph Waldo Emerson: Essays, second series
• The Collected Works of Ralph Waldo Emerson: Nature, addresses, and lectures
• The Essays of Ralph Waldo Emerson
• Edward Rowland Sill: the twilight poet
• The Merrill checklist of Ralph Waldo Emerson