Having become a writer, he published a few thrillers in the early 1980s, then in 1988, he offered Ramsay a book project on cannabis.

This book, released in 1991 under the title Fumée Clandestine, received tremendous media coverage after the author appeared on the Canal+ television program « Nulle part ailleurs [fr] ».

In the wake of the success of his book, Galland participated with friends in the founding of the Collectif d'Information et de Recherche Cannabique (CIRC) on 20 November 1991, an association of which he remained president for twenty years.

[1] In 1994 he relaunched « l'appel du 18 Joint », originally published in the newspaper Libération in 1976.

[2] Jean-Pierre Galland has been the subject of several legal proceedings, despite the support of many personalities and associations.