Reference material and source. Michaelius, Reverend Jonas. “Letter of Reverend Jonas Michaelius, 1628.” In J. Franklin Jameson, ed., Narratives of New Netherland, 1609-1664 (Original Narratives of Early American History). NY: Charles Scribner’s Sons, 1909. INTRODUCTION THE established church in the United Netherlands was the Reformed Church. Its polity was that of Geneva or of Presbyterianism.