I just checked the MJH Museum website, and Ken's newest tabs haven't yet appeared; there are still only seven pieces credited to him as of this morning. His latest efforts will probably at least double the number of songs available, as soon as Frank is able to post them.

Frank is a volunteer webmaster located in Seattle who maintains the site for a Mississippi-based nonprofit outfit, and I assume he's occupied with a day job as well as his volunteer duties. It might take a day or two before this huge selection of tabs becomes available.