Thomas E. Willson (Willson, Thomas E., -1901) is an author about whom very little biographical information is publicly available; library catalogue records confirm only his name and the year of his death, 1901, while his dates of birth, nationality, and educational background remain unverified. One work by him is held in the collection, Ancient and Modern Physics. Judging from its title, the book deals with physics and spans both ancient and modern dimensions, and may compare the historical development of physical thought with the new knowledge of its time. Because biographical material is lacking, his writing style and influence cannot be described in detail, yet the work itself offers a useful text for examining how physical knowledge was presented and popularized in the late nineteenth and early twentieth centuries. Readers and researchers should rely on the catalogue record and refrain from inferring the author's life beyond the available sources.