Conversation so far:
When was the Museum created?
she created in 1918.
Who was museum named for?
Gertrude Vanderbilt Whitney.
Who was she?
Gertrude Vanderbilt Whitney, the museum's namesake and founder.
How did the museum begin?
she offered to donate over 500 works of art to the Metropolitan Museum of Art, but the museum declined the gift.
What did she do when she was declined?
This, along with the apparent preference for European modernism at the recently opened Museum of Modern Art, led Whitney to start her own museum.
What did she name the  museum?
Whitney.

Question: What art work was displayed there?
Self-contained rewrite: What art work was displayed at the Whitney Museum of American Art?