The "Xianzhenglu"(獻徵錄), a well-known collection of biographies compiled by Jiao Hong(焦竑) of the Ming dynasty, has long been held in high esteem among scholars of Ming Studies for its erudition and precision. This paper compares the biographies of three early Ming generals found in the "Xianzhenglu" with the original sources that Jiao may have used when he compiled them. The aim is to re-evaluate the "Xianzhenglu" as a historical source by examining how Jiao selected, revised, and transcribed his source materials. The paper shows that while Jiao was rather careful in selecting source materials for composing the biographies, his work in supplementary sections was less rigorous, and they sometimes reflected his own biases. His textual revisions were not reflective of a pursuit of historical accuracy, and he did not transcribe the original documents with accuracy. Thus, according to the rigorous standards of historical scholarship, the "Xianzhenglu" does not qualify as a primary source.