Two land-grant universities cooperated with the Extension Service and the National Agricultural Library to identify the knowledge and research base of Extension 4-H Youth Development education and to abstract/compile the foundation materials to strengthen research-based 4-H youth development education throughout the United States. The resources were subsequently sorted for the use of educators according to five basic component areas that comprise the identified knowledge base from which 4-H youth development proceeds: communication, educational design, youth development, youth program management, and volunteerism. This annotated bibliography was created by searching the AGRICOLA database and focuses on youth development. Subjects include: (1) psychological, emotional, physical, social/moral, and cognitive development of adolescents; (2) vocational career development; (3) family relationships; (4) coping strategies; (5) adolescents' sexual attitudes; (6) parent child relationships; (7) adolescent depression; (8) sex and ethnic differences; (9) suicide; (10) smoking; and (11) drug and alcohol abuse. In addition to being accessible electronically, hard copies of the publications are also available through the interlibrary loan system of university and local libraries. Directions for obtaining cited documents are provided. (ABL)