Log in to the library's website before you follow the links on this guide. When logged in, you can more easily link to content paid for by the library and encounter fewer paywalls.
You can also install a browser extension called LibKey Nomad that will prompt you to sign in when using the library's resources.
PolicyMap is a U.S. national data and mapping tool that combines a curated, comprehensive geographic data library with simple, robust mapping and analytics tools. University faculty, researchers, and students use it to create compelling maps of up to five layers, export trend charts with key benchmarks, download data for use in other tools, generate on-the-fly reports and upload your own data to view it with ours.