References:
Dewhurst, Richard J. The Ancient Giants Who Ruled America: The Missing Skeletons and the Great Smithsonian Cover-up, Rochester, Vermont : Bear & Company, 2014
LCSH: 1. Giants -- North America 2. Human remains (Archaeology) -- North America.
3. Paleoanthropology -- North America
Ott, A. True, web page on Giants: https://atrueott.wordpress.com/forbidden-archeology/