Bill Hansell has been practicing and teaching taijiquan for over 30 years. His lineage is: Yang, Chenfu - Jiang, Yukun - Zhu, Lianfang - Cheng, Xianhao (who currently teaches in Philadelphia and has a blog at TheInternalArts.com). The Health Journal profiled Bill in Taking Time to Practice Tai Chi. The National Center for Complementary and Alternative Medicine of the National Institutes of Health has a brief overview of taiji chuan which can be accessed by clicking here . Science Daily follows news on alternative medicine and includes news about taiji and qigong and can be viewed here.
This web site will be coming down by the end of the summer. Though Bill is retiring from teaching you can still learn from him on his Youtube Channel - https://www.youtube.com/user/WilliamsburgTaiji.
His student, Stan Rockwell, is continuing to teach taijiquan and qigong in the Williamsburg area. You can find a class schedule here.