This document provides tips and resources for genealogy librarians filling interlibrary loan requests. It discusses the rising popularity of genealogy research and why genealogy requests can be difficult to fill. It outlines print indexes and online resources that can help locate genealogical information, such as genealogical repositories, digitized newspapers, census records, and more. The document also provides examples of difficult requests and how they were solved through additional searching. It concludes with tips for librarians, such as being flexible, checking alternate formats and local indexes, and knowing when to cancel a request.