Conversation so far:
What is important about the south dakota years?
Baum was born in Chittenango, New York in 1856 into a devout Methodist family.
Who were his parents?
Cynthia Ann (nee Stanton) and Benjamin Ward Baum.
Did he have siblings?
and was the seventh of nine children.
Where did he go to school?
From the age of 12, he spent two miserable years at Peekskill Military Academy but.

Question: where did he go after that?
Self-contained rewrite: where did Baum go after Peekskill Military Academy?