Under The Bronze Moon by Richard J. O'Brien
In Under the Bronze Moon, Professor Harold Miller discovers the otherworldly inspiration for the late writer R.J. Hyatt's only published novel, The Land of Dust and Honey—a long, dense exploration into an alternate world discovered by a soldier of The Great War and a young girl from a different century. When his publisher tasks him with locating a 'lost novel' by Hyatt, the scholar travels to meet Hyatt's literary estate heir, May Weldon.
There he learns that May wants his assistance in her passing from this world. For his help, Miller is rewarded with a well-guarded treasure and access to the fabled world from which Hyatt drew his inspiration. For a scholar who devoted his adult life to R.J. Hyatt's work, it is a dream fulfilled. How long the scholar will remember his life-changing experience, after May is gone for good, is something else altogether.