Prior to moving to New Harmony, both William Maclure and Robert Owen had visited Pestalozzi at his famous school in Switzerland and were much impressed with the Pestalozzian methods. In 1826, Maclure brought Joseph Neef, who had taught with Pestalozzi, to New Harmony, along with other Pestalozzian educators.
The Pestalozzian influence in New Harmony is recorded in
Josephine Mirabella Elliott, Partnership for Posterity: The Correspondence of William Maclure and Marie Duclos Fretageot, 1820-1833, Indiana Historical Society, Indianapolis, 1994.
The image of Pestalozzi see here appears in
Michael Heafford, Pestalozzi: His thought and its relevance today, Methuen, London, 1967,
where it is noted that the drawing is attributed, probably incorrectly, to F. M. Diogg.
Translations into English of Pestalozzi's writings include
Johann Heinrich Pestalozzi, How Gertrude Teaches Her Children: An Attempt to Help Mothers to Teach their own Children and an Account of the Method, translated by Lucy E. Holland and Francis C. Turner, edited by Ebenezer Cooke, Gordon Press, New York, 1973; and
Johann Heinrich Pestalozzi, The Education of Man: Aphorisms, Greenwood Press, New York, 1969.
A standard work on Pestalozzi's methods and philosophy of education, including as Appendix III an annotated list of Pestalozzi's publications, is
J. A. Green, The Educational Ideas of Pestalozzi, Greenwood Press, New York, 1969.