I would like to thank Shaun Hardy, Librarian at the Department of Terrestrial Magnetism, Carnegie Institution of Washington, for his kind assistance during my research. I would also like to thank the Carnegie Institution for allowing me to use pictures from its publications on this website.
Cindy Murphy, Librarian at the Connecticut Valley Historical Museum, in Springfield, Massachusetts, provided invaluable assistance, as did Dave Stier and Dick Stenberg at the Springfield Science Museum.
Thanks also to Tucker Hood, for his creativity and hard work on this website.
And I would especially like to thank the following volcanologists and geologists for their patient instruction in the field and during personal conversations and interviews:
Ronnie van Overmeeren