Ayurveda, a ancient medical tradition from India, has three great ancient authors. Each is known for one significant text. Today they are understood to be compilation texts, summaries of schools of medicine at the time of their writing, but the authors are believed to have been real people who wrote each individual book. Like an encyclopedia.
Sushruta, writing sometime in the 600s BCE (probably) wrote the “Sushruta Samhita,” a treatise on medicine and surgery with a large section dedicated to medical instruments as well. Charaka, alive sometime in the 200s BCE, wrote a treatise focusing solely on medicine, the “Charaka Samhita.”
The third great author, Vagbhata, came much later in the 600s CE. His two major ayurvedic treatises similarly covered a broad swathe of medicine, but they also explicitly referenced the Sushruta Samhita and the Charaka Samhita, covering where they disagreed and the various solutions that had arose to those disagreements over the centuries.