"Although he had little formal education and was never ordained, he travelled for well over fifty years as a home missionary, evangelist, and Bible teacher. A prolific writer, he contributed regularly to various Christian periodicals and journals in addition to publishing over eighty books and pamphlets. His writings included addresses or commentaries on the entire New Testament, all of the prophetic books of the Old Testament, and a great many volumes on specific themes and subjects.
"For some time he was with the Salvation Army but later joined the Plymouth Brethren. After 1924 he held meetings continually under the auspices of Moody Bible Institute, going often as visiting faculty to Dallas Theological Seminary. For eighteen years of ministry (1930-1948), he was pastor of the Moody Memorial Church in Chicago. He went to be with the Lord on January 16, 1951, while on a preaching tour in New Zealand." 
Along with others such as C. I. Scofield, he was influential in popularizing dispensationalism among Protestants in North America. Despite his lack of formal education, his tremendous mental capacity, photographic memory and zeal for his beliefs caused him to be called "the Archbishop of Fundamentalism."
- E. Schuyler English, H.A. Ironside, Ordained of the Lord, Loizeaux Bros. (1976) ISBN 0872131432.
- Edward Reese, The Life and Ministry of Harry Ironside. 1976: Fundamental Publishers — an online text version is available at .