Sachse, J. F., Pastorius, F. D., Op den Graeff, H., Van der Walle, J., & Könneken, J. B. (1903). Letters relating to the settlement of Germantown in Pennsylvania, 1683-4: From the Könneken manuscript in the ministerial-archiv of Lübeck, reproduced in fac-simile under the direction of Julius Friedrich Sachse .. Lübeck and Philadelphia, Pa.: [publisher not identified].

Sachse, Julius Friedrich, Francis Daniel Pastorius, Hermans Op den Graeff, Jacobus? Van der Walle, and Jaspar Balthasar Könneken. Letters Relating to the Settlement of Germantown in Pennsylvania, 1683-4: From the Könneken Manuscript in the Ministerial-archiv of Lübeck, Reproduced in Fac-simile Under the Direction of Julius Friedrich Sachse .. Lübeck and Philadelphia, Pa.: [publisher not identified], 1903.

Sachse, Julius Friedrich, et al. Letters Relating to the Settlement of Germantown in Pennsylvania, 1683-4: From the Könneken Manuscript in the Ministerial-archiv of Lübeck, Reproduced in Fac-simile Under the Direction of Julius Friedrich Sachse .. Lübeck and Philadelphia, Pa.: [publisher not identified], 1903.