William Speer is buried at Allegheny Cemetery, Pittsburgh, Pennsylvania.
Remarks of the Chinese Merchants of San Francisco Upon Governor Bigler's Message (1855)
Democracy of the Chinese (1868)
The Oldest and Newest Empire: China and the United States (1870)
The Great Revival of 1800 (1872)
God's Rule for Christian Giving: A Practical Essay on the Science of Christian Economy (1875)
Dr. Speer’s Sabbath School History (1884)