He also became a familiar sight in the city, using a specially equipped bus with a platform and loudspeakers to hold outdoor evangelistic rallies on Baltimore street corners.

[7] A Lutheran church and later a Mormon congregation had previously occupied a portion of the site since 1893, and the newly constructed Baltimore Gospel Tabernacle incorporated the former structure in its design, more than tripling the building's overall size.

[10] The newly completed church was dedicated on October 19, 1930, and Pastor Lowman began weekly live radio broadcasts of the services on Wednesdays and Sundays on WCAO and WCBM.

[11] The Tabernacle broadcasts eventually reached coast-to-coast in the U.S., including such high-powered, Class 1-A clear channel radio stations as WABC in New York City, WLS in Chicago, and WBT in Charlotte, North Carolina.

[2] During World War II, the U.S. Office of Censorship required Lowman's sermon texts to be submitted for review prior to airing, because of the broadcast's international coverage.

The programs were also noted for their music, featuring the Tabernacle's Möller pipe organ accompanying the congregation singing hymn favorites.

Daughters Ruth, Edna, and Doris sang as the "Lowman Sisters", ending each broadcast with the Maori melody hymn, "Search Me, O God".

[13] In addition to his writings and weekly ministry at the Tabernacle, Lowman conducted crusades in various cities, at such venues as Pittsburgh's 2,500–seat Soldiers and Sailors Memorial Hall.

[1] Outdoor rallies were sometimes held, such as an August 16, 1936, camp meeting at Fairmount Park in Red Lion, Pennsylvania, which attracted a crowd of 4,000 persons.

[11] Lowman was an early proponent of racial harmony during the segregation era, making several speaking appearances in the 1930s at the church of Elder Michaux, a popular African American minister in Washington, D. C. The weekly radio broadcast originated live from the Baltimore Gospel Tabernacle on Sunday mornings at 11 a.m. until the final service there on December 13, 1959.

The program then moved to studios in St. Petersburg, Florida, where it was produced and distributed by the International Gospel Broadcasters, a non-profit ministry founded by G. E. Lowman.

[22] On July 1, 2012, a new 16 ft. Open Wood rank was dedicated in his memory at the pipe organ of the Ocean Grove, New Jersey, Great Auditorium.

Organist Gordon Turk played O That Will Be Glory, Pastor Lowman's radio program theme song, at the conclusion of the evening service.

Writing in The Washington Post, Sarah Kaplan compared Carson's stand to Lowman's opposition to Kennedy in the 1960 U.S. presidential election.

[24] G. E. Lowman moved from his home in Hampton, Maryland, to St. Petersburg, Florida, in 1960, where he died five years later on January 18, 1965, of acute leukemia, ending the worldwide radio ministry of the International Gospel Broadcasters.