# William Ennis

## Biography

William Duane Ennis was an author recognized for his contributions to technical literature, particularly in the early 20th century. He is notably credited with writing "Flying Machines Today," a work reflecting on the advancements and state of aviation during his time. Another significant publication attributed to him is "Applied Thermodynamics For Engineers," which served as a resource in the field of engineering. Ennis's works indicate an expertise in mechanical and aeronautical subjects, making him a noteworthy figure in the realm of technical writing. His books, available through various platforms, continue to be accessible for those interested in the historical context of these scientific and engineering disciplines.

## Books

- [Flying Machines Today](https://samolit.com/books/96793)