You're right, Larry. I need to do some better vetting of new and little-known publishers. I looked over what amazon.com had from volume one to 12. No reviews. That said, the Stone & Stone site, which I highly regard, missed the series up to volume 10. They had this to say:
http://books.stonebooks.com/reviews/170129.shtml
Lulu is located in Morrisville, North Carolina.