Ditto, and no, it's not being updated. Neither is Alloy Artifacts. Both were very useful sites in their time, the Van Natta Brothers Plomb page in particular for early Plomb collectors, but the status quo becomes an issue, even in discussions here on GJ at times, when the state of research has moved beyond those sites, but collectors still cite them as gospel. Van Natta gets a pass. It was all above and beyond their call of duty to begin with. I have no such regard for AA, which refused to share resources and refused to accept outside references and research that disagreed with their conclusions.
If you don't know about
Tool Archives, you should check it out. It was started by a GJ guy (twertsy), has an open source library of catalogs, and accepts inputs and examples from members, including a comments function, making it more of a community enterprise. Link
here.
Also, since we're on the subject of moving the Plomb needle to the right with new research, you may be interested in
this thread, which moves the start of the Pebble Plomb period several years to the left (into wartime) of where Van Natta and AA have it starting.