Main link:
https://janaf.nist.gov/tables/S-index.html

Reference "ref"
https://janaf.nist.gov/tables/S-001.html
https://janaf.nist.gov/tables/S-001.txt
>JNF-Sulfur-001-unlisted.txt

Orthorhombic "cr"
https://janaf.nist.gov/tables/S-002.html
https://janaf.nist.gov/tables/S-002.txt
>JNF-Sulfur-002-ortho.txt

Monoclinic "cr"
https://janaf.nist.gov/tables/S-003.html
https://janaf.nist.gov/tables/S-003.txt
JNF-Sulfur-003-mono.txt

Liquid "l"
https://janaf.nist.gov/tables/S-004.html
https://janaf.nist.gov/tables/S-004.txt
JNF-Sulfur-004-liq.txt

"cr,l"
https://janaf.nist.gov/tables/S-005.html
https://janaf.nist.gov/tables/S-005.txt
JNF-Sulfur-005-cr,l.txt