Author
School District of Philadelphia, Pa Office of Curriculum and Instruction
3
Ethnic Heritage Affairs Institute
2
National Council for the Social Studies
2
Pennsylvania Council for the Social Studies
2
Social Science Education Consortium
2
American Historical Association
1
Catholic Church. Archdiocese of Philadelphia (Pa.)
1
Center for Global Perspectives
1
Chick, Kay A.
1
Conley, Philip Mallory, 1887-
1
Driver, Edwin D.
1
ERIC Clearinghouse for Social Studies/Social Science Education
1
Hunt, Erling Messer, 1901-
1
Jane Addams Peace Association
1
King, David C.
1
Long, Cathryn J.
1
Middle States Council for the Social Studies (U.S.)
1
Minnesota State Board of Education Curriculum Development Task Force
1
New York (State). Social Studies Review and Development Committee
1
Parsons, William S.
1
Pennsylvania Committee on Treatment of Minorities in Social Studies Textbooks
1
Pennsylvania. Bureau of General and Academic Education. Social Studies Division
1
School District of Philadelphia, Pa
1
School District of Philadelphia, Pa School Reform Commission
1
Seif, Elliott
1
Totten, Samuel
1
Turkington, Grace Alice, 1879-
1
Wax, Rosalie H.
1