Harold W. Stubblefield

Book Review: The Foundations of American Distance Education: A Century of Collegiate Correspondence Study

Stephen J. Wright, S. Wright, Barbara L. Watkins, 1992 .

Adult Education in the American Experience from the Colonial Period to the Present. The Jossey-Bass Higher and Adult Education Series.

Patrick Keane, P. Keane, Harold W. Stubblefield, 1994 .