When I am looking for new additions to Holybooks.com, I often come across books in another niche I am very keen on. Books about adventurers, explorers, and logbooks from the travels in the ages of discovery. https://www.greatestadventurers.com is the new home for those works.
So far only a handful books have been uploaded, but rest assured, more will come. The concept is the same as her on Holybooks.com, free PDF e-books which all have reached the Public Domain (or have been donated to the site by the rightsholders), meaning they can be read and distributed freely. Please take a look at https://www.greatestadventurers.com and let me know what you think. Suggestions for new books are welcome.