Complex sentence: In 1983, the two groups collaborated to publish a seminal book in the field of fat activism, "Shadow on a Tightrope", which collected several fat activist position papers initially distributed by the Fat Underground, as well as poems and essays from other writers.
Split into simpler sentences: In 1983, the two groups collaborated to publish a seminal book in the field of fat activism, Shadow on a Tightrope. Aunt Lute Books, 1983 The book collected several fat activist position papers initially distributed by the Fat Underground, as well as poems and essays from other writers.