After 1855, Alger went to the Bulfinch Street Church in
Boston, and preached around the country including in New York, Colorado, Illinois, Maine, Louisiana, and Rhode Island. Alger was an active
abolitionist and
Free Mason, and a contributor to various periodicals including the
Christian Examiner, which he co-edited in the 1860s. His remarks—which denounced the Fugitive Slave law and the Boston authorities who observed it—were controversial; and the city refused the usual publication of the speech. However, seven years later, the city government unanimously reversed their decision, publishing the speech and publicly thanking him for it. as well as the All Souls Unitarian Church in Roxbury (also called the Mount Pleasant Congregational Church). He also served in
The Church of the Messiah, an important Unitarian church in New York. He served as Chaplain of the
Massachusetts House of Representatives.
Harvey Jewell, the
speaker of the Massachusetts House of Representatives was impressed by Alger's prayers and asked for his words to be taken down by the
stenographer and published. == Death and legacy ==