American Association of Petroleum Geologists (AAPG)
The search for new sources of helium is of paramount importance as a combination of declining production and increasing demand have made helium prices soar. This follows a century in which the United States had a near monopoly on helium reserves and U.S. production met global demand. Although most of the helium production story has taken place in the United States, there are other nations that have produced and are producing helium.
The History of Helium Exploration, Part 2 of 2
Helium Shortages and Emerging Helium Provinces