We make no guarantees as to the accuracy of the information in the following links. They are supplied for your enjoyment.
US Navy dive manual Rev 6 (Apr 08) http://www.supsalv.org/pdf/DiveMan_rev6.pdf
Dictionary of terms for the respiratory sytem.
Historical Diving Society A lot of neat historical diving books.
Howard Hall Productions. World renown photographer's stories.
Last update 19 dec 2010