Title: Terrace's notebook for gas engineers and students
Description: An excellent summary of the development of the gas industry to c.1947 (essentially to pre-WW2) with some additional data 1945-7.  It is (was) aimed at the practising gas engineer as a practical source book but **also** (and this is its value today) for students of the gas industry.  It looks at the industry from Newbigging's work of 1898 and therefore is useful as a detailed overview of how the industry developed during the twentieth century.  It is a collection of papers and addresses given to professional bodies from about 1927 onwards.  These are assembled by subject: coal, gasholders, retort processing, recycling, etc.  Many papers are necessarily technical (some chemical equations and force diagrams) and not for general reading but most are quite plainly, and interestingly, written (for an engineer or historian anyway).  Of particular value are the drawings (usually by the author) at the end of each chapter, which can help to interpret some of the more detailed descriptions in the papers.  As an engineer, I'm fascinated by it.
Time periods: 1898-1947