Conversation so far:
In what ways did David McCullough experience growth?
Trying not to become Bad News McCullough, David McCullough decided to write about a subject showing people were not always foolish and inept or irresponsible.“
Where did David McCullough grow up as a youth?
David McCullough was born and raised in Pittsburgh.

Question: How long did he live in Pittsburgh?
Self-contained rewrite: How long did David McCullough live in Pittsburgh?