Where can I buy Ding Genlao's calligraphy?

Confucius Old Books Network. According to Ding Genlao's personal data, we know that his calligraphy is sold on Confucius' second-hand books online. Ding Genlao, male, 1946, from Weinan, Shaanxi. He studied in Xi 'an Instrument Industry Institute, university of international business and economics, China, and Libo School of Economics and Management. Now he is a invited expert of Chinese Academy of Management Sciences and a member of China Collection Association.