The Art History library guide is an excellent way to connect to information you need.
Magazines and Newspapers include quick details about a person or an event.
Books provide more complete information and also often include additional research on a topic or a special perspective.
Sometimes only a chapter or a small section of a book is needed, but If your research requires in depth knowledge you may want to read one or more books completely.
Corot, Jean Baptiste Camille. Interrupted Reading. 1870. Art Institute Chicago, https://www.artic.edu/artworks/81512/interrupted-reading.