Complex sentence: In 1988, Towell joined the Magnum photo agency, becoming the first Canadian associated with the group and he has had picture essays published in The New York Times, Life, Rolling Stone, and other magazines.
Split into simpler sentences: In 1988, Towell joined the Magnum photo agency, becoming the first Canadian associated with the group. He has had picture essays published in "The New York Times,"Life, "Rolling Stone," and other magazines.