題記這是上世紀三十年代趙萬里先生在清華大學講“應用目録學”課時,孫作雲先生的聽課筆記。1973年我從鄭州市博物館調回北京大學,在圖書館善本室工作。那時“文革”尚未結束,整天還是搞運動,到圖書館讀書的人不多,但宿白先生却是善本室的常客,他爲教學和研究經常查閱古籍,於是我有了請教先生的機會。宿白先生是我國著名考古學家,是當今我國在歷史考古學上的一位集大成者,先 Inscription This is the 1930s, Mr. Zhao Wanli at Tsinghua University, “Applied Bibliography” class, Mr. Sun Zuoyun listening notes. I was transferred back to Peking University in Zhengzhou City Museum in 1973 and worked in the rare books room. At that time, the “Cultural Revolution” was not over yet. It was still engaged in sports all day long and few people went to the library to study. However, Mr. Su Bai was a frequent visitor to Rare Booksroom. He often consulted ancient books for teaching and research, so I asked Chance of sir Mr. Su Bai is a famous archeologist in our country and is a master of ancient Chinese history and archeology.