Discovery of Luray caverns, Virginia /

by Gurnee, Russell H.

Gurnee guide to American caves : a comprehensive guide to the caves in the United States open to the public /

by Gurnee, Russell H., Gurnee, Jeanne
Published 1980

Discovery at the Rio Camuy,

by Gurnee, Russell H., Gurnee, Jeanne

Visiting American caves /

by Sloane, Howard N., Gurnee, Russell H.
Published 1966