renderings of buildings and landscapes became known as a staple of Wright's style, though she was never given credit by the famous architect. Over a century later she would be known as one of the greatest delineators of the architecture field, but during her life, her talent was seen as only an extension of the work done by male architects. She was associated with Wright's studio for almost fifteen years and was an important contributor to his reputation, particularly for the influential Wasmuth Portfolio, for which Mahony created more than half of the numerous renderings. Architectural writer Reyner Banham called her the "greatest architectural delineator of her generation." Her rendering of the K. C. DeRhodes House in South Bend, Indiana, was praised by Wright upon its completion and by many critics. Wright understated the contributions of others of the Prairie School, Mahony included. A clear understanding of Marion Mahony's contribution to the architecture of the Oak Park Studio comes from Wright's son, John Lloyd Wright, who says that William Drummond, Francis Barry Byrne, Walter Burley Griffin, Albert Chase McArthur, Marion Mahony, Isabel Roberts and George Willis were the draftsmen—the five men and two women who each made valuable contributions to Prairie-style architecture for which Wright became famous. During this time Mahony designed the Gerald Mahony Residence (1907) in Elkhart, Indiana for her brother and sister-in-law. When Wright eloped to Europe with Mamah Borthwick Cheney in 1909, he offered the Studio's work to Mahony but she declined. After Wright had gone, Hermann V. von Holst, who had taken on Wright's commissions, hired Mahony with the stipulation that she would have control of the design. In this capacity, Mahony was the architect for a number of commissions Wright had abandoned. Two examples were the first (unbuilt) design for Henry Ford's Dearborn mansion, Fair Lane and the Amberg House in Grand Rapids, Michigan. Work with Walter Burley Griffin Mahony recommended Walter Burley Griffin to von Holst to develop landscaping for the area surrounding the three houses commissioned from Wright in Decatur, Illinois. Griffin was a fellow architect, a fellow ex-employee of Wright, and a leading member of the Prairie School of architecture. Mahony and Griffin worked on the Decatur project before their marriage; afterward, Mahony worked in Griffin's practice. A Walter Burley Griffin/Marion Mahony designed development that is home to an outstanding collection of Prairie School dwellings, Rock Crest – Rock Glen in