Kang Duk Won was one of the original 9 kwans that eventually merged to create the Kukkiwon system. This Kwan was founded in the later 1950s by former students of the YMCA Kwon Bop Bu (Chang Moo Kwan). These two students of YMCA Kwon Bop Bu founder Byung In Yoon were Hong Jong-Pyo and Chul Hee Park. Today, Kang Duk Won still exists in Korea and is officially known as Taekwondo Kang Duk Won, which is a social friendship club that endorses the Kukkiwon system and supports the World Taekwondo Federation.

References

1. A Modern History of Taekwondo 1999 (Korean) Kyong Myung Lee and Kang Won Sik ISBN 89-358-0124-0
2. Global Taekwondo 2003 (English) Kyo Yoon Lee ISBN 89-952721-4-7
3. A Guide to Taekwondo 1996 (English) Kyo Yoon Lee ISBN 8975000648
4. Kukkiwon 25th Anniversary Text 1997 (Korean) Un Yong Kim
5. Kukkiwon Textbook 2006 (English/Korean) Um Woon Kyu
6. http://www.muskegontaekwondo.com/history.htm