The complete YMT fan form is taught every couple of years in the NYC class. The Yangjia Michuan fan form was created by Wang Yen-nien, often using movements from the YMT Kunlun and Wudang sword forms as inspiration. The fan form is one of three weapon forms that are part of the Yang family hidden tradition.
Among those seen in the photos are Robert Politzer, George Vlachos and Gretchen MacLane.
Here are a few images from a 2004 class in the “big” room: