The period of time from the late 1930s to the end of the 1950s is commonly known as the "Golden Age" of science fiction. The Golden Age was noted for the volume of science fiction produced due to the large number of science fiction-oriented pulp magazines and the depth of the creative talent involved. Many of the writers working in this period established concepts that would have a tremendous cultural impact on their readers. Many ideas integral to modern science fiction frequently originated in this period. Two of the writers responsible for such ideas were A.E. Van Vogt and E.E. "Doc" Smith.