In 1885, Lalor taught at East Side High School, Milwaukee.[2] Lalor worked as a translator in the Director of Mint, U. S. Treasury Department.[3] Lalor collaborated with Louis Wolowski, Ludwig Nohl, and Paul Shorey. He translated works by Rudolf von Jhering and Wilhelm Roscher. He translated from German two works by Ludwig Nohl, a biography of Ludwig Beethoven in Life of Beethoven (1881)[4] and Wolfgang Mozart in Life of Mozart (1880).[5]
In 1899, Lalor died from injuries due to a fall.[2]
Works or publications
Cyclopaedia of Political Science, Political Economy, and of the Political History of the United States. 1895. OCLC634756812.
The Constitutional and Political History of the United States. 1881. OCLC294964. with H. Von Holst, Alfred Bishop Mason, P. Shorey, Brainerd, Ira Hutchinson
The Primer of Political Economy; in Sixteen Definitions and Forty Propositions. 1885. OCLC6784624. with Alfred Bishop Mason