Thanks for your answer.
I was genuinely interested to know what your reasoning is to list the SNW books as a series, since I didn't really see them as a series by just looking at the content of the various SNW books, which were all over the place theme-wise.
Now that I think about it, I imagine common thematic books that are sequentially numbered can also be considered to be a series in the strict sense of the word. The SNW books were numbered one through ten, after all. I guess that makes them a series if nothing else does.![]()