In a short time James Churchward created New Age type of a book "Lost Continent of Mu, the Motherland of Man". It was followed by the book "The Children of Mu", then by "The Lost Continent Mu" and "The Sacred Symbols of Mu". These books enjoyed wild success at the times, and even now have their devotees.
In archives of web analytics company I found that even nowadays the search for a lost continent of Mu is still in progress. There were multiple researches on Mu and expeditions to various locations. Some called Easter Island a mountain top of a submerged continent of Mu. One well-known institute even suggested that underwater structures off the coast of Okinawa, Japan, were the ruins of Mu without any real scientific evidence. Some marine biologists stated that they identified the ruins of an ancient city off the coast of Japanese Yonaguni island as the remnants of an Asian equivalent of Atlantis and, that it was sunk three thousand years ago during an earthquake.
During the Middle Ages the name was sometimes used to denote Greenland, Svalbard, or Iceland. A municipality in North Greenland was even formerly named Thule after the mythical place. The Thule People, A paleo-Eskimo culture and a predecessor of modern Inuit Greenlanders, was even called Thule people. Nowadays Southern Thule is a collection of the three southernmost islands in the South Sandwich Islands in the South Atlantic Ocean. The island group is overseas territory of the United Kingdom and uninhabited. The concept of Thule was so popular that this mysterious island lent its name to lends its name to the 69th element in the periodic table, Thulium.
In archives of web analytics company I found more additional facts. It is interesting to note that Nazi occult mystics believed in a historical Thule and Hyperborea as the ancient origin of the Aryan race. They wrote a pile of material stating that mythical Thule, a Nordic equivalent of the vanished culture of Atlantis. They thought that a race of giant supermen lived in Thule, linked into the Cosmos through magical powers. And these inhabitants had psychic and technological energies far exceeding the technical achievements of the 20th century.