Renew Renew your library materials online here. Library Elf Library Elf is a web-based and email tool to keep track of your library borrowing. To sign up you need your library card barcode and PIN. T Search Search the Library System Catalog here. Library Value Calculator Libraries provide a valuable community resource. Check out this online calculator via the New York Library Association to find out how much value you receive from Tivoli Library. Download Download Audio and eBooks here. o Databases Learn a language, find a job, read the newspaper & more! Click here.