# Subject headings

- [Library of Congress (LC)](/library-cataloguing/9yMHsFGBXS9DDRGtdmSE/authorities/subject-headings/library-of-congress-lc.md)
- [Medical subject headings (MeSH)](/library-cataloguing/9yMHsFGBXS9DDRGtdmSE/authorities/subject-headings/medical-subject-headings-mesh.md)
- [Homosaurus](/library-cataloguing/9yMHsFGBXS9DDRGtdmSE/authorities/subject-headings/homosaurus.md)
- [Undocumented, enslaved and indigenous people](/library-cataloguing/9yMHsFGBXS9DDRGtdmSE/authorities/subject-headings/undocumented-enslaved-and-indigenous-people.md)