The first group to advertise themselves as psychedelic rock

The first group to advertise themselves as psychedelic rock were the 13th Floor Elevators from Texas, at the end of 1965. The term was first used in print in the Austin American Statesman in an article about the band titled "Unique Elevators shine with psychedelic rock", dated 10 February 1966, and theirs was the first album to use the term as part of its title, in The Psychedelic Sounds of the 13th Floor Elevators, released in August that year.