ABSTRACT
This special edition of Aphasiology is dedicated to the clinical scientist Dr. Bob Marshall, who has served this journal and the wider aphasiological community for many years. Bob has decided to step down as Aphasiology's North American Editor, a post he has held since the origins of the journal in 1987. It is unusual for an individual to be an editor of a major professional journal for such a long time, but such dedication is typical of Bob. During his long and productive career he has been clinical scientist, writer, teacher, and mentor par excellence.
