This document provides an overview of different types of geographical reference sources and tools. It defines gazetteers as dictionaries of geographic names that include location information. Free online gazetteers from the US and world Census are described. Guidebooks are defined as handbooks providing travel information for specific locations. Atlases are collections of maps with indexes, and examples of print versus online atlases are discussed. The document also covers map reading skills, resources for teaching those skills, and using GPS technology for geocaching activities.