拙编《刘半农书话》搜寻刘半农各个时期为自己和他人著译所作序跋四十余篇 ,三分之二为集外文。但仍有遗珠之憾 ,一九三二年七月刘半农为周志辅辑《五十年来北平戏剧史材》所作的序文即为其一。全文如下 :　　数年前偶于厂肆得旧时戏目一册 ,不知何人所录 ,目起光绪初迄於清末 Clumsy “Liu Bannong Shuhua” search Liu Bannong for their own time and other people’s translation of the preface made more than 40 articles, two thirds of foreign languages. However, there is still a legacy of regret. In July 1932, Liu Bannong wrote a preface to Zhou Zhifu’s “Historical Materials of Peking Opera in 50 Years”. The full text is as follows: A few years ago, even in the old plant Stanford old episode, I do not know who recorded, the beginning of the Guangxu beginning until the end of the Qing Dynasty