Patrons with disabilities are encouraged to bring a person with them to help in using the catalogs and in retrieving materials from the stacks. However, if this is not possible, library staff will arrange for assistance. Please note that telephone reference is available. Reference staff will search up to 10 items in the catalogs upon request. For additional information or to arrange for staff assistance please contact Judith Currano, Chemistry Librarian, 215-898-2177.