 One of his chief labors was the translation of the Bible into Armeno-Turkish (Turkish written in Armenian letters), in making and revising which he spent 20 years.In 1865, after 43 years of toil, he returned to the United States and died in Philadelphia at the residence of his son, Dr. William Goodell, on February 18, 1867.Consult his life by Prime (New York, 1876).