Book excerpt: The 1906 earthquake of Pentecostalism at the Azusa Street Mission in Los Angeles, California, sent a jolt to Washington, DC, during 1906–1907. This Washington, DC, shock wave began when a group of women read and acted upon reports in the Azusa Street Mission’s Apostolic Faith newspaper. This event resulted in the creation and development of an influential church in the District of Columbia, Full Gospel Assembly. In a well-researched examination of a little-recognized and nearly forgotten religious community in Washington, DC, retired United States Army chaplain Don Kammer explores the church’s beginnings as part of the early twentieth-century Pentecostal and Charismatic revival. Full Gospel Assembly was an example of an early Pentecostal-evangelistic fusion, a common element in today’s American evangelical religion. Kammer identifies the challenges, successes, and the impact on the surrounding DC community. As he leads others through FGA’s fascinating history, Kammer explains why the story of FGA is important, reflects upon the conflicted definitions of Pentecostal and Charismatic Christianity, describes popular malign portraits of holy rollers and tongue talkers, tells the tales of meetings on the Electric Street Railway Line, in theaters, in Parlor Houses, identifies denominational influence, and much more. The Full Gospel Assembly (FGA) of Washington, DC, 1907–1934 is a fascinating and comprehensive examination of the neglected history of an early twentieth-century revival with ties to the 1906 Azusa Street Mission and revival.