Israel Regardie

He was not first: Crowley printed Golden Dawn ritual in The Equinox from 1909, and on 21 March 1910 the Court of Appeal dissolved Mathers's injunction against more.

Daily Mail, 'Order of Rosicrucians', law report of MacGregor v. Crowley in the Court of Appeal, 22 March 1910; Israel Regardie, The Golden Dawn, Introduction to the Second Edition, on Crowley having published the Order teachings in The Equinox

Crowley's secretary from 1928, who printed the Golden Dawn's rituals in four volumes, 1937–40.

Sources4 sources

Primary source

Israel Regardie, The Golden Dawn, vol. 1, 1937, IntroductionRegardie's own reading of the Order material he printed: ceremonial initiation as spiritual growth, given complete to serious students outside the occult orders, against the obligation of secrecy.
You are being given a complete system of attainment.
Daily Mail (law report), 'Order of Rosicrucians: A Mystic Society and its Secrets', Court of Appeal, MacGregor v. Crowley, 1910, 22 March 1910 (transcribed on the Aleister Crowley Timeline)Mathers's affidavit said Crowley had disclosed Order ritual in 'The Temple of Solomon the King' in The Equinox (September 1909 number); the Court of Appeal dissolved the injunction against further publication on 21 March 1910.
Their lordships allowed the appeal and dissolved the injunction
Israel Regardie, The Golden Dawn, 6th edition (Llewellyn), Introduction to the Second Edition, Volume IRegardie records that Crowley scolded him for breaking his obligation of secrecy, though Crowley had published the same Order teachings in The Equinox decades earlier; the volume also records Regardie's death in 1985.
he had published these same Order teachings in the Equinox
Israel Regardie, The Eye in the Triangle: An Interpretation of Aleister Crowley, 1982, Introduction (Falcon Press edition)Regardie joined Crowley in Paris in 1928 at his invitation to be his secretary, and served as his secretary for some years.
I had served as Crowley's secretary for some years