A factory worker is killed on the job, and his co-workers pray over him, making reference to the "Holy Spirit". The time of the documentary is the late 1800s, and the term in use then was "Holy Ghost". "Holy Spirit" did not come into use until after the Vatican Council of 1963.
As a twelve-year-old child, Andrew Carnegie is shown bringing home his pay, which his mother takes. The scene shows him handing over a dollar bill to her. However, there was no paper money in 1850. Paper currency was not in use until the Civil War. In 1850 he would have been paid only in coin.