Career
Professor Walker was employed at Hartford Seminary from 1889 to 1901, when he accepted a position at Yale University. His publications include:
On the Increase of Royal Power Under Philip Augustus (1888)
The Creeds and Platforms of Congregationism (1893)
A History of the Congregational Churches in the United States (1894)
The Reformation (1900)
Ten New England Leaders (1901)
John Calvin (1906)
Great Men of the Christian Church (1908)
French Transport-Geneva (1909)
A History of the Christian Church (1918).