A.M. Degree before the Civil War?
How did one earn an A.M. degree in the United States before the Civil War? I am researching Marcius Willson (1813-1905), a textbook author who claimed to have an A.M. degree and was called "Professor," but I can only find evidence that he received an A.B. from Union College, Schenectady, NY, in 1836. He went on to a few other teaching posts at prep schools and academies, but the most advanced post was at Poughkeepsie Collegiate School, where he was listed as a faculty member with an A.B.