Starting with the library catalog is your best bet to determine what Princeton has across 8 campus libraries and online.
General searching tips. If you are searching for a known item, search by Keyword (can include title word, author name, and/or publisher name, etc.), or Title Starts with. If you are looking for an exhibition catalog from a particular museum, use the Advanced Search, enter the museum name as Author/Creator and enter a keyword of your choice.
Select Subject (browse) in Library Catalog, and type in the following to find relevant content. You may also search for a specific artist this way: use LAST NAME FIRST NAME:
AFRICAN AMERICAN ART
AFRICAN AMERICAN ARTISTS (see sub-headings)
AFRICAN AMERICANS IN ART
CARIBBEAN AREA IN ART
FEDERAL ART PROJECT
HARLEM RENAISSANCE (see various sub-headings)
African-American art and African-Americans portrayed in art tends to fall under call numbers N6538.N5, and N8232 (can browse these numbers in the library catalog).
One can see a list of ALL electronic journals at Princeton here or by doing a title search in the library catalog. Alternatively, one can browse journals more visually and by subject using Princeton's instance of BrowZine. BrowZine allows one to save favorite titles to a Bookshelf, receive alerts when a new issues is published, and retain selected articles.