Dave, the Product History being referred to in this thread isn't the individual lighthouse histories but the overall Harbour Lights Product List as it were..

If you are talking about the missing history on the Waugoshance page at Harbour Lights website, I am sorry to say that since John Chidester is no longer the Web Master for the Harbour Lights website that it probably won't be updated.

There is product history for the HL690 Waugoshance, MI lighthouse in the Collector's Guide on page 337..