Often in the forum there are questions about which book or published resource to refer for a particular subject in process engineering. If we look around the list is huge and sometimes some engineer may have access to some book whereas the other person may have access to another book. Apart from the standard chemical engineering texts during the undergraduate course which most young chemical engineers are familiar such as "McCabe & Smith", "Coulson & Richardson", "Treybal", "Smith & Van Ness", "Levenspiel", "Wilkes" "Bird, Stewart and Lightfoot" and "Kern", there are several specialized books on subjects such as pumps, compressors, mixers, dryers, natural gas, steam, petroleum and many such other. The purpose of this blog entry is to list down a few of these books which I have personally encountered during my career. There is no order of preference in the subject-wise list provided and the readers may have their own preferences regarding which book provides a better coverage to a particular subject. Readers may also provide their own preferences on the book for the particular subject matter in the comments section of the blog entry.