Small Scale, Big Impact: Creating an Employee Newsletter 
Every few weeks we receive a flyer about a 'seminar' or a 'workshop' on newsletters -- now to write them, how to design them, how to produce them, how to improve them. Although we haven’t actually attended any of these seminars, they travel to many major cities, and the list of topics covered and the testimonials printed in the flyers are impressive. This phenomenon of the successful traveling newsletter seminar suggests that A) lots of people (hence organizations) are interested in creating or improving newsletters, and B) there’s lots to be learned about newsletters.
Anderson, Pamela A., Sally Nereson, and Dorothy J. Wiemann. STC Proceedings (1994). Articles>Document Design>Publishing>Newsletters