Wisconsin Speleological Society

References

Alexander, E. Calvin, Jr., ed., "An Introduction to the Caves of Minnesota, Iowa, and Wisconsin," Guidebook for the 1980 National Speological Society Convention, 1980.

Anonymous, "So you want to be a spelunker!" reprinted from Nittany Grotto News, VII, 2, October 1958.

Hondo Underground Rescue Team, "Rules for Safe Caving," National Speleological Society Caving Information Series.

Pittsburgh Grotto, "Information for Neophyte Cavers," National Speleological Society Caving Information Series.