ABCmouse.com teaches numbers, addition and subtraction, shapes, patterns, measurements, and more for ages 2-7.

Covering more than 500 years of the African-American experience, African-American History Online offers videos, primary sources, articles, images, timelines, and more about people, events, and topics of African-American history.

The American Astronomical Society (AAS) is an international non-governmental organization with a mission to enhance and share humanity’s scientific understanding of the universe as a diverse and inclusive astronomical community. To further support the Society’s mission and provide immediate access to important research, the AAS transitioned its entire journals portfolio to fully open access (OA) as of 1 January 2022. All content — past, present, and future — is immediately and openly accessible: anyone can read, download, and share anything in the portfolio and there will be no subscription fees or paywalls. Includes The Astronomical Journal (AJ), The Astrophysical Journal (ApJ), The Astrophysical Journal Letters (ApJL), The Astrophysical Journal Supplements Series (ApJS).

In-Library only access to online journals of the American Physical Society. Includes The Physical Review journal collection of 16 leading peer-reviewed research journals, such as Physical Review Letters, Physical Review X, Physical Review, and Reviews of Modern Physics.

Delivers billions of records in census data, vital records, directories, photos, and more. U.S. collections deliver hundreds of millions of names from sources such as federal and U.S. censuses; birth, death, and marriage records including the Social Security Death Index; and U.S. border crossing and trans-ocean ship records. Military collections deliver over 150 million records containing information often not found elsewhere and includes records from the colonial to the Vietnam era.