During his time as mission president, the church received official recognition from the government of Panama, and was able to begin missionary work in the San Blas Islands.

[3] In 1976, Brewerton was honored by the Alberta Pharmaceutical Association as “the most outstanding pharmacist in community service outside the profession”.

In 1979 he moved to São Paulo as the church's area president for Brazil, succeeding William Grant Bangerter.

From 1989 to 1990 he was a counselor to Hugh W. Pinnock in the general presidency of the church's Sunday School organization.

[9][10] In 2009, Brewerton was scheduled to present in the seventh annual Book of Mormon Lands Conference, in Salt Lake City.

Due to the LDS Church's formal approach to general authority nomenclature, Brewerton, over time, began being addressed as "Ted E." instead of his birth name "Teddy".