Tlaloc was founded by Cavan McCarthy, a librarian at the Brotherton Library, with the aim of providing an, “open forum for modern poetry.” First issued in December 1964, for a time it acted as a bi-weekly supplement to Ikon; Douglas Sandle was a member of the editorial board. By the time the second series of magazine was issued in 1965 (Tlaloc 7), it had become independent of Ikon and was published by McCarthy under the Location Press imprint; it was later published from Blackburn and then London when McCarthy relocated. The main emphasis of Tlaloc was on concrete and visual poetry; contributors included Dom Sylvester Houedard, Ian Hamilton Finlay and Angela Carter, amongst others. The last issue (Tlaloc 22) was published in 1970.