I promised a few entries ago that I would do another Seth's Christmas Ghost Stories book post and here it is. As of today, there appears to be 30 books already published in the series, so I have a lot of catching up to do with my collection, which, as of today, looks like this:
As I hope to collect the full series eventually, I have created a webpage to add more info about the series and detail my growing collection. You can find it both here and on my Library page.