I'm a reader and writer of historical novels. I'm also one who enjoys history and when different technologies were invented. As a reader it bothers me when facts are incorrect.
I contacted the author detailing the problems. The reply was that the editor didn't say anything so it was all right.
Can an author fudge the details a little. Sure, in needlework this is called a design decision. No one needs to know you changed the design. For writing any fudging of history should be made clear. In Lord's Love, Cottonwood Series #2 the detail of a law of Great Britain was noted since I needed the law still in effect which it wasn't. An author's note was added explaining the law and why I had used it when it wasn't still in effect in 1876.
As authors we owe it to our readers to do the research and write historically accurate books. It gives credibility to what we write and shows that we care about our work rather than simply pumping out stories. Besides, you can learn interesting facts which can be added deepening the story.
Especially for Writers
2 days ago