This document provides information on how to search free crystallography databases. It discusses several free databases including the Crystallography Open Database (COD), Spectral Database for Organic Compounds (SDBS), American Mineralogist Crystal Structure Database, and Bilbao Crystallographic Server. It also shows how to search the commercial SciFinder-n database through a university library subscription. Examples are provided of searching for ibuprofen data on PubChem, ChemSpider, and COD to find chemical structures, properties and spectral information. Free software like Avogadro can be used to view crystal structure files from these databases.