What is a first-hand or eyewitness account called?

first-person account -- ???

primary source??

Correct! A first-hand or eyewitness account is often referred to as a "first-person account" or a "primary source." These terms imply that the information comes directly from someone who experienced or observed the events being described. When searching for such accounts or sources, it can be helpful to use these terms in combination with your research topic, such as "first-person account of World War II" or "primary sources on the Civil Rights Movement." This will help you find the most relevant and reliable information for your research.