This second volume of Brandenburg essays presents fresh evidence of the broadening use of correspondence education throughout the world. The first essay summarizes current worldwide trends and the final essay describes extension education fifty years from now. There are essays reflecting the development of correspondence education in Great Britain, Sweden, and Venezuela, in the developing nations, in frontier settings, and as part of quite sophisticated educational structures. Other essays explore the purposes of correspondence education, the role of the correspondence instructor, and the weaknesses and advantages of the correspondence method. The role of the new media in correspondence education is imaginatively foreshadowed. Techniques necessary to promote correspondence education are described and evaluation is discussed. Finally there is a review of research on correspondence study. The document is also available, for $2.00 from the University of Wisconsin, University Extension, Madison, Wisconsin 53706. 156 pages. (ly)