A Tutorial and Guide to Library Sources. This tutorial was prepared by librarians at the State Library as a guide for anyone seeking to compile a legislative history of a New York State law. It provides a summary of appropriate reference sources and materials, most of which are available at the State Library. These materials, except for fragile items, may be photocopied for a fee. Items that the Library allows to circulate may be loaned to those with borrowing privileges at this Library or may be borrowed through interlibrary loan. The reference librarians will provide assistance in any aspect of this tutorial.