Steiner, Johann Friedrich Rudolph - JPortal

http://zs.thulb.uni-jena.de/receive/jportal_person_00015098

Zeitschriften-Portal

VIII,1-VIII,20

https://web.archive.org/web/20070928053939/http://www.goethe-museum.com/register/de/dept_48.html

Thüringer Naturbrief - Heim der Jüngere, Johann Ludwig - Geologe, Mineraloge

http://www.thueringer-naturbrief.de/index.php?option=com_content&task=view&id=5071&Itemid=88

Thüringer Naturbrief