John McMaster was declared the world’s “First Clear” on March 9, 1966. There had been other clears, most notably Sonia Bianca, the actual “First Clear.” However, L. Ron Hubbard had purged her from Church history.
Two pages excerpted from Religion Inc.: The Church of Scientology by Stewart Lamont. Harrap Books, London. 1986.
Below is the Church of Scientology’s 1968 PR article on John McMaster — look for the added bonus on “Galactic Trading and Ethnic Advancement” using “doll bodies” on pages four and five: