http://news.google.com/newspapers?id=LaIrAAAAIBAJ&sjid=hvwFAAAAIBAJ&pg=5932,5861726&dq=lydia+cornell+actress&hl=en

Norman Lear gave Conrad Bain absolute power and creative control to develop a new series starring Conrad after 'Maude' bit the dust. The show of course would become Diff'rent Strokes. Conrad credits Lear with preventing him from becoming typecast as Arthur Harmon.

http://www.sitcomsonline.com/photopost/data/726/ah1.JPG