- Author: Jason Dark Author Record # 172195
- Language: German
- Used As Alternate Name By: Martin Eisele, Andrew Hathaway, A. F. Morland, Helmut Rellergerd, unknown (German), Earl Warren
- Note: According to Florian Hilleberg's 2023 nonfiction book "Dunkle Legenden" on the 'John Sinclair' series, this pseudonym was after 1982 exclusively used by Helmut Rellergerd