First published in 1929, Dictionary of Technical Terms by Frederic Swing Crispin was created as a practical reference for engineers, tradespeople, students, builders, and others working in technical fields.

The book defines specialized words and expressions used across numerous industries, including mechanical engineering, aeronautics, architecture, electricity, construction, woodworking, and the building trades. By gathering this terminology into one compact volume, Crispin provided readers with a convenient way to understand the language found in technical drawings, equipment instructions, trade manuals, and engineering publications.

Reference books like this were especially valuable during a period of rapid industrial and technological development. As machinery and engineering practices became more advanced, workers needed a shared technical vocabulary to communicate accurately, interpret instructions, and perform their jobs safely.

Within the Power Mechanical Steam Museum, this dictionary represents the knowledge that supported industrial craftsmanship. Understanding technical language was—and remains—an essential part of designing, operating, maintaining, and repairing boilers, steam engines, and related machinery.