Paulus Matthysz, a prominent music printer in Amsterdam during the seventeenth century, published Jacob van Eyck's Der Fluyten Lust-hof and a collection entitled 't Uitnement Kabinet. Three extant copies of Lust-hof include a tutor Vertoninge...op de Handt-fluit, presumably by Matthysz, and a tutor by Gerband van Blanckenburgh, Onderwyzinge...op deHandt-Fluyt. Their content is not correlated with Lust-hof, and they were presumably designed for inclusion in the Kabinet II. Confusion over the tutors' conception has led to published misinformation jeopardizing their historical worth. The casual generalizations regarding the two tutors can be refuted by reestablishing the interrelationship between the tutors and the two collections. This paper employs a comprehensive study into their origins in order to rectify how the tutors are referenced in the twenty-first century.