Conversation so far:
When was the Whitney Museum of American Art created?
The Whitney Museum was founded in 1930.
Who was Whitney Museum named after?
Named after the museum's founder, Gertrude Vanderbilt Whitney.
Who was Whitney Gertrude?
Gertrude Vanderbilt Whitney was a well-regarded sculptor as well as a serious art collector.

Question: How did the museum begin?
Self-contained rewrite: How did the Whitney Museum of American Art begin?