Question:
Who was the chair of Lutheran Church--Missouri Synod in Jul, 1989?

Context:
 John William Behnken is the chair of Lutheran Church--Missouri Synod from Jan, 1935 to Jan, 1962. 
 Robert T. Kuhn is the chair of Lutheran Church--Missouri Synod from Jan, 2001 to Jan, 2001. 
 F. C. D. Wyneken is the chair of Lutheran Church--Missouri Synod from Jan, 1850 to Jan, 1864. 
 Friedrich Pfotenhauer is the chair of Lutheran Church--Missouri Synod from Jan, 1911 to Jan, 1935. 
 Alvin L. Barry is the chair of Lutheran Church--Missouri Synod from Jan, 1992 to Jan, 2001. 
 Oliver Raymond Harms is the chair of Lutheran Church--Missouri Synod from Jan, 1962 to Jan, 1969. 
 Ralph Arthur Bohlmann is the chair of Lutheran Church--Missouri Synod from Jan, 1981 to Jan, 1992. 
 C. F. W. Walther is the chair of Lutheran Church--Missouri Synod from Jan, 1864 to Jan, 1878. 
 J. A. O. Preus II is the chair of Lutheran Church--Missouri Synod from Jan, 1969 to Jan, 1981. 
 Heinrich Christian Schwan is the chair of Lutheran Church--Missouri Synod from Jan, 1878 to Jan, 1899. 
 Gerald B. Kieschnick is the chair of Lutheran Church--Missouri Synod from Jan, 2001 to Jan, 2010.

Answer:
Ralph Arthur Bohlmann