Tsao's passion for history and literature led him to spend all his free time perusing the library's excellent collection. He became a living catalogue of the NTU collection, the man who knew the location of everything it contained, and assisted many students and faculty members with their research.
基於對文史的熱愛，曹永和每有空暇即飽覽圖書館豐富藏書，對存放位置也瞭若指掌，成了台大的「圖書館百科全書」，協助過許多師生做研究。