A report on the early years of the International Association for Lichenology (IAL) has been published by Ingvar Kärnefelt & Arne Thell in 2007.

A history of German lichenologists has been published by Ingvar Kärnefelt, Peter Scholz, Mark R. D. Seaward & Arne Thell in 2012. A pdf-file is available here, a printed copy can be ordered for 5 € plus mailing expenses from: Martin-Luther-Universität Halle-Wittenberg, Universitäts- und Landesbibliothek Sachsen-Anhalt, Schriftentausch, 06098 Halle (Saale), Germany.