- EbookDr. Nikola ReturnsGuy Newell Boothby
- EbookPharos, the EgyptianGuy Newell Boothby
- EbookDr. Nikola's ExperimentGuy Newell Boothby
- EbookFarewell, NikolaGuy Newell Boothby
- EbookThe Lust of HateGuy Newell Boothby
- EbookDr. Nikola's Experiment (Book #4)Guy Newell Boothby
- EbookGuy Newell BoothbyGuy Newell Boothby
- EbookA Bid for FortuneGuy Newell Boothby
- EbookA Bid for Fortune or Dr Nikola's VendettaGuy Newell Boothby
- EbookGuy Newell Boothby – The Complete CollectionGuy Newell Boothby
- EbookDr. Nikola's ExperimentGuy Newell Boothby