Question:
Which employer did George Philbrook work for in Jul, 1927?

Context:
 George Philbrook works for University of Idaho from Jan, 1925 to Jan, 1927. 
 George Philbrook works for Whittier College from Jan, 1927 to Jan, 1929. 
 George Philbrook works for University of Nevada, Reno from Jan, 1929 to Jan, 1930. 
 George Philbrook works for Multnomah Athletic Club from Jan, 1920 to Jan, 1922.

Answer:
Whittier College