I found these right inside Deoksu Palace in Seoul. It's the palace near Seoul City Hall : Across the street from the Seoul library and Seoul Plaza. On the palace grounds they have a wonderful gift shop that sells many unique items that are rare and near impossible to find at other souvenir shops.
Brother Anthony's site may be found here and for those finding their way into the Korean way of tea / Korean tea Ceremony I highly recommend his book The Korean Way of Tea available via What The Book : (The Korean Way of Tea) or through Seoul Selection's The Korean Way of Tea
Tales of a Gisaeng and all of my posts regarding Gisaeng.
About the Author
Matthew William Thivierge has abandoned his PhD studies in Shakespeare and is now currently almost half-way through becoming a tea-master (Japanese,Korean & Chinese tea ceremony). He is a part time Ninjologist with some Jagaek studies (Korean 'ninja') and on occasion views the carrying on of pirates from his balcony mounted telescope.