Bowman conducted the 1985 Brethren Profile Study, the first nationally-representative survey of Brethren during the twentieth century, and served for many years as Contributing Editor to "The Brethren Encyclopedia, Volume IV" (2005).
Bowman's research focused on Brethren during the twentieth century. He conducted a nationally representative survey of Brethren in 1985 and contributed to "The Brethren Encyclopedia, Volume IV," published in 2005.