Question:
Who was the chair of United States Commission of Fine Arts in Aug, 1951?

Context:
 Daniel Chester French is the chair of United States Commission of Fine Arts from Jan, 1912 to Jan, 1915. 
 Earl A. Powell III is the chair of United States Commission of Fine Arts from May, 2005 to Dec, 2022. 
 Gilmore David Clarke is the chair of United States Commission of Fine Arts from Jan, 1937 to Jan, 1950. 
 Harry G. Robinson III is the chair of United States Commission of Fine Arts from Jan, 2002 to Jan, 2003. 
 David E. Finley, Jr. is the chair of United States Commission of Fine Arts from Jan, 1950 to Jan, 1963. 
 Daniel Burnham is the chair of United States Commission of Fine Arts from Jan, 1910 to Jan, 1912.

Answer:
David E. Finley, Jr.