Mary J. Lyschinska

• The Ethical teaching of Froebel
• The Kindergarten Principle: Its Educational Value and Chief Applications
• Ethical Teaching of Froebel As Gathered from His Works; Two Essays
• Henriette Schrader-Breymann
• Henriette Schrader-Breymann, Band 1
• Henriette Schrader-Breymann, Band 2
• Mary J. Lyschinska
• The kindergarten principle