"The Digital Inquiry Group (DIG for short) is an independent nonprofit organization established by the team behind the Stanford History Education Group (SHEG). Founded by Sam Wineburg in 2002, SHEG became one of the nation’s leading providers of free curriculum in the social studies. DIG spun out of Stanford to be able to act with greater agility and have an even greater impact. Today, our history curriculum and our digital literacy materials have over 15 million downloads and are used in all 50 states and around the globe. Our recent work focuses on preparing young people to be more discerning consumers of the information they encounter online. Through our research, classroom materials, and professional development, we seek to empower learners to make sense of the past and present."

"Multimedia resources for K-12 classroom instruction and teacher professional development"

"Free video-based materials for social studies teachers."

"The State Board of Education adopted the History-Social Science Framework on July 14, 2016. This is the final digital version of the Framework. "

"The California State Archives serves a wide variety of researchers whose interests range from legislative intent and public policy to genealogy and railroad history in California."

"Established in 1850, the California State Library is the central reference and research library for state government and the Legislature. The library collection includes more than 4 million titles, 6,000 maps, and 250,000 photographs. It has an extensive collection of documents from and about the state’s rich history and is one of the major genealogical reference libraries on the West Coast."

"Calisphere is a gateway to digital collections from California's great libraries, archives, and museums. Discover over 1,750,000 images, texts, and recordings—and counting."

"The Center for Civic Education is a nonprofit, nonpartisan organization based in California. The Center’s programs are implemented with the assistance of a network of public- and private-sector organizations and educational leaders in every state and congressional district in the country and in more than eighty other countries, many of which are emerging and advanced democracies."

"Children & Youth in History is a world history resource that provides teachers and students with access to sources about young people from the past to the present."

"The David Rumsey Map Collection was started over 30 years ago and contains more than 150,000 maps. The collection focuses on rare 16th through 21st century maps of North and South America, as well as maps of the World, Asia, Africa, Europe, and Oceania. The collection includes atlases, wall maps, globes, school geographies, pocket maps, books of exploration, maritime charts, and a variety of cartographic materials including pocket, wall, children's, and manuscript maps. Items range in date from about 1550 to the present."

"Our work has evolved in the last 30 years, from reducing prejudice to tackling systemic injustice."

"The Library of Congress offers classroom materials and professional development to help teachers effectively use primary sources from the Library's vast digital collections in their teaching."

"The National Council for Geographic Education (NCGE) is a non-profit organization, chartered in 1915, to enhance the status and quality of geography teaching and learning."

"The National Council for History Education provides professional and intellectual leadership to foster an engaged community committed to the teaching, learning, and appreciation of diverse histories. Through historical inquiry, NCHE empowers learners to research and interpret the past."

"Native Knowledge 360° (NK360°) provides educators and students with new perspectives on Native American history and cultures. Most Americans have only been exposed to part of the story, as told from a single perspective through the lenses of popular media and textbooks. NK360° provides educational materials, virtual student programs, and teacher training that incorporate Native narratives, more comprehensive histories, and accurate information to enlighten and inform teaching and learning about Native America. NK360° challenges common assumptions about Native peoples and offers a view that includes not only the past but also the vibrancy of Native peoples and cultures today."

"Explore the past and learn about the present with resources on government, history, economics, and more."

"Founded in 1846, the Smithsonian is the world's largest museum and research complex, consisting of 19 museums and galleries, the National Zoological Park and nine research facilities."

"The Stanford Program on International and Cross-Cultural Education (SPICE) serves as a bridge between Stanford University and K–12 schools and community colleges by developing multidisciplinary curricular materials on international topics, conducting teacher professional development seminars, and teaching distance-learning courses."

"A living memorial to the Holocaust, the United States Holocaust Memorial Museum inspires citizens and leaders worldwide to confront hatred, prevent genocide, and promote human dignity."

"The WDL makes available on the Internet, free of charge and in multilingual format, significant primary materials from all countries and cultures."