This fourth volume concludes the work on E-coupled standard-gauge tank locomotives, which bears the title "Schwere Brocken". This volume was published in 2022 by Herdam Verlag.
The official launch of the book took place on 5 November 2022 at the Donat bookshop in Duisburg.
As complement to the printed version, the interested reader can find below some additional compilations. These represent the current status while being regularily supplemented:
- List of used literature
- List of names
- List of locations
- Register of companies and institutions [comes in 2023]
- Register of locomotives [comes in 2023]
- Corrections and additions (all volumes; in German only)
