Trying the Dark: Mammoth Cave and the Racial Imagination, 1839

Mammoth Cave's African-American Heritage, Kentucky Life

Dark Degenerations: Life, Light, and Transformation beneath the Earth, 1840–circa 1900

Some nineteenth- and twentieth-century Australian geological clerics

Mars in fiction - Wikipedia

Caves as Vibrant Places: A Theoretical Manifesto

Stephen Bishop: The First Man To Explore Mammoth Caverns Was Black

Dark Degenerations: Life, Light, and Transformation beneath the Earth, 1840–circa 1900

The Project Gutenberg eBook of The Lenape Stone, or The Indian and the Mammoth, by H. C. Mercer.

Spectral Passages: John Knight and the Voyage of the 'Hopewell' in 1606 – Brewminate: A Bold Blend of News and Ideas

Mammoth Cave Lovecraftian Science

Mammoth Cave ranger shares legacy of black cave explorers

How slaves, and their families, help shape Mammoth Cave National Park

Darwin, C. R. 1839. Narrative of the surveying voyages of His Majesty's Ships Adventure and Beagle between the years 1826 and 1836, describing their examination of the southern shores of South America