"The Bells of Acheron" by E. C. Tubb. Chapbook published by Sabre Press in 2019. This chapbook features the 'precursor' story for the Earl Dumarest Saga. It makes excellent reading and would be useful source material for any Science Fiction RPG (the Dumarest Saga largely being the foundation for the Traveller RPG). Chapbook is digest-sized (5.5"x8.5") with a clear plastic cover and is 12 pages in length.