Visual research materials, seal collection題為「印章集」的視覺研究資料
1960s–1970s
Includes paper folders and loosen leaves of newspaper clippings and magazine cut-offs, mostly on seal-engraving and Chinese calligraphy. A series of clippings of a newspaper column on seal-engraving is inside the box. Also includesd a Ha's drawing of a seal-engraving designed with Chinese text of Pak Shing Restaurant in the paper folder named "Hong Kong overiew", 10 pieces of calligraphy, covers of the Chinese magazine, Guan Zha, published in 1949 to 1950 and Ming Pao Monthly Magazine in the 1960s are inside the box.