GEOLOGIC FIELD TRIP GUIDEBOOKS; PROGRESS ON A PROJECT TO IDENTIFY INDEXING GAPS

Field trip guidebooks are an important part of the geological literature. Indexing of the various guidebook series is incomplete, and indexing gaps continue to increase. Recently, a six-month sabbatical project was conducted to determine mutual and unique gaps in three indexes used to identify and locate geologic field trip guidebooks. The three indexes are: GeoRef and OCLC WorldCat (both by subscription), and Geologic Guidebooks of North America Database (GGNAD), published online by American Geological Institute (AGI) in cooperation with Geoscience Information Society (GSIS). Information from this project will be used to reduce indexing gaps in GeoRef and the GGNAD, and will help determine which missing guidebooks need to be found and added to library collections. Although the project is ongoing, progress will be reported, along with some tips for seeking and locating guidebooks that were learned during the process.