汪家熔同志编完了他的出版史研究文集，把原稿复印了一份给我，希望我写一篇序，我欣然应命。我读过几篇他写的出版史研究文章，对他的研究水平有所了解。他长期任职于商务印书馆，热心了解馆史并进行研究，他的文章中必有商务历史情况的介绍，正是我所希望了解的。1949年我随? Comrade Wang Jia-fu compiled the collection of his research on the history of publication, the original copy of a copy to me, I hope I write a preface, I am pleased to be appointed. I have read a few articles on the history of his writing that he wrote about his research level. He has worked in the Commercial Press for a long time, earnestly understands the history of the Museum and conducts research. There must be an introduction to business history in his essay, which is exactly what I would like to know. With me in 1949?