Starting with the library catalog is your best bet to determine what Princeton has in its 9 separate campus libraries.
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.
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.