The thirteenth issue of Dendron news, first distributed in July 1989. Contents include "Let us say NO to psychiatric drugs!" by David Oaks; "What did Abbie Hoffman & the Contras have in common?"; "Warning: Heat waves can kill people taking common types of psychiatric drugs!"; "Jury gives psychiatric inmate $600,000"; "U.S. Greens consider psychiatric liberation movement; "The Mind Trip"; and more.