(17th, 18th, and 19th Centuries) Currently in Print or Online a bibliography by Licia and Larry Kuenning showing books, pamphlets, letters, and other documents written by members of the Society of Friends during its early and middle periods
K. Henderson. U.S. Department of Education, Office of Special Education and Rehabilitative Services; U.S. Department of Education, Office of Special Education Programs, Washington, DC, (августа 2008)