Hermitage House Publishing contracted L. Ron Hubbard to write Dianetics, and in the first week of March, he completed Dianetics: The Modern Science of Mental Health. He also wrote Dianetics: The Evolution of a Science for magazine publication to promote and accompany the release of Dianetics.
On 9 May 1950, L. Ron Hubbard released Dianetics, and on 18 June 1950, it appeared on the New York Times bestseller list where it remained for 28 consecutive weeks, thus launching a national movement that quickly became the fastest growing movement in the U.S.
On 7 June, L. Ron Hubbard delivered his first recorded lectures on Dianetics in Elizabeth, New Jersey, where the Hubbard Dianetics Research Foundation was formed.
On 10 August, after moving to a new residence in Los Angeles, California, L. Ron Hubbard delivered a Dianetics lecture to a sold-out crowd of over 6,000 people at the Shrine Auditorium.
Through the remainder of the year, L. Ron Hubbard continued to tour and speak in major cities. By the end of December, he had delivered over one hundred lectures while crisscrossing the country.
Los Angeles Lecture Series and Transcripts: August 29-30, 1950
Oakland Public Lecture Series and Transcripts: September 1950