The material in this series is arranged chronologically.  A large portion of this material consists of letters of congratulations to Mullins upon his appointment as president of the University of Arkansas, and letters expressing sentiments of appreciation for his work as president upon his retirement in 1974.  Included in this series are three letter books, essentially scrapbooks containing letters.  Two of these contain materials spanning identical dates.  When practical, letters have been kept with other materials pertaining to the same subject matter; thus a significant amount of correspondence on specific topics can be found in Series 3, the Subject Files.  One item from this series is stored in OV Box 9.