http://www.thejewishmuseum.org/site/pages/content/exhibitions/special/katz/TJM_se_katz_2006.html
Alex Katz Paints Ada at the Jewish Museum in New York, NY. "...Alex Katz met Ada Del Moro in 1957 and Ada in Black Sweaterof that year marks the beginning of their collaboration as artist and model.
Katz's paintings of Ada are often captivating because of what they leave out and do not say, and for the way they explore formal aspects of painting while hinting at possible narratives. Ada has been called Katz's muse, nonetheless she has agency in the creation of her own image and influences how much Katz reveals about her."