Most books on and about illustration are located on the fourth floor. There are several locations, thus note in what area they are shelved.
Who Is Who In Graphic Arts NC45.W62 vol.1-2 Art Ref
The World Encyclopedia Of Cartoons NC1325.W67 1980 Art Ref
Illustration A Visual History NC998.H66 2008
Great American Illustrators NC975.R
Society of Illustrators (Annual of American Illustration) NC975.A1.I5 2011
American Showcase Illustration (serial) NC998.5.A1.A44
Few libraries can afford or have the space to house every book ever published. Therefore, you can through Interlibrary Loan request to borrow books and articles from other libraries. This is a wonderful service that is part of your tuition. All you need to do is register once and you can use this service for the entire time you are an enrolled student at Syracuse University. Keep in mind the books have shorter loan periods than SU and the fines are high.
WorldCat also known as OCLC's First Search is an interactive online information system available on the World Wide Web. It is a good place to find what has been written about various titles and what libraries own these sources. If Syracuse University does not own theses materials one can always request them through Interlibrary Loan.