و آر ایل:https://upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Ole_Peter_Hansen_Balling_-_John_Brown_-_Google_Art_Project.jpg/440px-Ole_Peter_Hansen_Balling_-_John_Brown_-_Google_Art_Project.jpg
و آر ایل:https://en.wikipedia.org/wiki/George_DeBaptiste
