Newly listed sites

Search annotated records of the American founding era

Search legislation and congressional records

Official publications from the US federal government

Convention case-law knowledge by article and theme

Treaty records and depositary information

Guides for international and foreign legal research

Read and compare constitutions by topic

British and Irish case law and legislation

Public legal texts alongside explanatory reference material

Educational reference on oxygen and respiratory care

Clinical educational libraries and case-based reference reading

Medical study material linked to a clinical reference library

North American bird identification and life-history reference

Technical data and calculations for engineering study

Explore chemical elements through the periodic table

Spectral lines and atomic energy-level reference data

Physical constants linked to units and uncertainty guidance

Curated learning-resource discovery by discipline

Open textbooks and educational materials across disciplines

Exoplanet records and mission data in a research archive

Search published astronomical catalogues and data tables

Astronomical objects connected to literature and identifiers

Scientific-journal discovery across languages and disciplines

A journal library with regional and subject browsing