From 1939 through 1968, Wyeth featured the house and its residents, Christina and Alvaro Olson, in a number of paintings and drawings. In June 2011, the home was named a National Historic Landmark. The home is owned by the Farnsworth Art Museum and is available to the public. Olson House Tours offer an opportunity to see inside the home where many of these paintings were created. The tours include visits to all nine rooms on the first floor as well as the rooftop studio where some of Wyeth's most famous works were painted. Christina Olson was Wyeth's first major American client. She and her husband Alvaro bought the house in 1939, just before World War II began. They had two children who were born in the house: John and Helen. When Christina died in 1969 at the age of 57, she had become one of America's best-known women artists. Her work is displayed in many museums across the country. Wyeth traveled to Maine several times to paint scenes from both families' lives. He also went back to paint more of Christina Olson's artwork later in his career. Some people think that he copied parts of her paintings during this time but this is not true; instead, he used what he saw in life to create new images. In addition to painting portraits, Wyeth also drew cartoons for The New Yorker magazine.