Gary Rohrmayer, president and executive minister of Converge MidAmerica, overseeing its business and ministry interests that supports regional church planting and ongoing care of its partner churches.

Donald A. Luidens, professor of sociology at Hope College in Holland, Mich. (affiliated with the Reformed Church in America), has followed the evolution of denominations and denominationalism in the U.S.

Daniel V. A. Olson, associate professor of sociology at Purdue Univeristy. Specializes in sociology of religion and has written about church growth.

Daniel Montgomery founded and serves as the lead pastor for Sojourn Community Church in Louisville, Ky., a church plant. Sojourn began as an attempt to reach people who were falling through the cracks in more mainstream churches. It officially launched in September 2000 using rented space and has expanded to include multiple campuses.

The American Religion Data Archive lists Pentecostal denominations (scroll down to U.S. Denominations). Some scholars have named more than 300.

See a timeline of the Azusa Street revival.

The Encyclopedia of Religion and Society entry on Pentecostalism gives an overview of the history and issues facing Pentecostalism.

Read an April 15, 2006, article from the Washington Post about the Azusa Street centennial celebration.

Read an Aug. 25, 2002, Baltimore Sun article republished by Religion News Blog describing the growth of black megachurches and neo-Pentecostalism.