Search for government resources at USA.gov.
By Whole world - land and oceans.jpg: NASA/Goddard Space Flight Center derivative work: ויקיג'אנקי [Public domain], via Wikimedia Commons
Gapminder is a tool to help create free teaching resources based on reliable statistics.
If It Were My Home is a tool to compare living conditions in your own country to those of another.
The library pays for access to databases and ebooks which can be used as text materials. Although these resources are not OER, they are available to NMC students at no cost. Here are some examples:
Northwestern Michigan College (NMC) Library Research Guide on Open Educational Resources (OER) by NMC Librarians is licensed under a Creative Commons Attribution 4.0 International License.