Nancy Mowll and Elizabeth Kennedy Mathews

The author name 'Nancy Mowll and Elizabeth Kennedy Mathews' appears to be a conflation of two distinct individuals; the search results exclusively reference Nancy Mowll Mathews, a renowned American art historian, curator, and author specializing in 19th and 20th-century transatlantic art, particularly known for her biography of Mary Cassatt. Elizabeth Kennedy Mathews is not identified in the provided search data as a co-author or related figure in this context.