Audubon found a printer for the "Birds of America", first in Edinburgh, then London, and later collaborated with the Scottish ornithologist William MacGillivray on the "Ornithological Biographies" – life histories of each of the species in the work.est comfort. The last print of his monumental work was issued in 1838. By this date, Audubon was famous. He traveled America several more times in search of birds, and settled in New York City. He made one more trip to the West in 1843 for his work of mammals, the "Viviparous Quadrupeds of North America". It was largely completed by his sons. The text was written by his long-time friend, the Lutheran pastor John Bachman (whose daughters married Audubon’s sons). Audubon spent his last years in senility and died at age 65. He is buried in the Trinity Cemetery at 155th Street and Broadway in New York City.