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Summary
DescriptionCalvary Baptist Church worship service.jpg
Worship service at Calvary Baptist Church New York. William Ward Ayer (far right), who would later become the first president of the National Religious Broadcasters, stands before a congregation during an altar call. The altar call was carried live by radio.
Source
Source: Mark Ward, Sr., Air of Salvation: The Story of Christian Broadcasting, Grand Rapids, MI: Baker Books, 1994
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