4 public-domain matches

Cavern Cave Studies

Cover of Penn's Grandest Cavern

Penn's Grandest Cavern

Henry W. Shoemaker

Cover of The life of St. Ignatius of Loyola

The life of St. Ignatius of Loyola

Christoph Genelli, Charles Sainte-Foi, Thomas Meyrick

The Beast in the Cave

The Beast in the Cave

H. P. Lovecraft

Cover of Processes of Speleogenessis

Processes of Speleogenessis

Wolfgang Dreybrodt, Franci Gabrovšek, Douchko Romanov