Hello, I'm not a pilot but I have a question about a stunt my great-uncle used to do. He was a stunt instructor in aerial gunnery in the Army Air Corps in WWI and, after his discharge, he put on air shows in southern California. According to a newspaper report on one of his shows, one of the stunts he performed was described as "the famous McGilder Twist." I have searched all over the Internet for information on this maneuver without result. I was hoping to find a video of someone doing this stunt or at least a verbal description of it. There was also a newspaper article that mentioned a "McGilder Turn," but I don't know if that's a different stunt or just another name for the McGilder Twist. My only interest is for curiosity but I'm hoping someone can shed some light on this matter. Thanks in advance for any help.