Jacobus founded "The American Genealogist" (TAG) in 1922 and published his "Families of Ancient New Haven" in three volumes, beginning in 1923.
He was the founder of the highly respected New Haven School of Genealogy, which demanded that high scholarly standards be applied to Genealogy and was elected as a Fellow of the American Society of Genealogists (FASG) in 1941, as just the fourth member of that distinguished group.
Jacobus founded "The American Genealogist" (TAG) in 1922 and published his "Families of Ancient New Haven" in three volumes, beginning in 1923.
He was the founder of the highly respected New Haven School of Genealogy, which demanded that high scholarly standards be applied to Genealogy and was elected as a Fellow of the American Society of Genealogists (FASG) in 1941, as just the fourth member of that distinguished group.