This booklet of only twenty-six pages provides a concise history of the American Unitarian Association. The author reached back to 1753 when Charles Chauncy preached against the trinity. She moved on to William Ellery Channing's Baltimore sermon of 1819 making clear where the liberals stood. Slavery was an important issue for the early American Unitarians. Beginning on p. 22 in 1865 and ending on p. 24 in 1955, Spoerl outlines ninety years of meetings and negotiations between The American Unitarian Association and the Universalist Church of America. The work is completed with two page of bibliography.