Please do not request textbooks through Interlibrary Loan.  Interlibrary Loan cannot be used as a substitute for buying textbooks or other course required materials. Loan periods are rarely longer than 4 weeks and renewals are not always granted. Keeping a book longer than the loan period will cause your ILLiad account to be blocked, prohibiting you from requesting additional Interlibrary loan materials. Overdue books cause strained relationships with other providing libraries we rely on for supplemental research materials.