Question:
Who was the chair of American Alliance of Museums in May, 1908?

Context:
 Laura L. Lott is the chair of American Alliance of Museums from Jun, 2015 to Dec, 2022. 
 Hermon Carey Bumpus is the chair of American Alliance of Museums from Jan, 1906 to Jan, 1907. 
 William Jacob Holland is the chair of American Alliance of Museums from Jan, 1908 to Jan, 1909.

Answer:
William Jacob Holland