Surly's site for their catalog archive:
Downloads
According to the site above, the LHT frame and fork only became available in 2004. The earliest they list the LHT as a complete bike is 2007. Weird that the 2006 catalog is Japanese only for some peculiar reason.
For a long time the Cross-Check was their only complete bike.
From what I have seen and read and FWIW, Surly is not known for complete accuracy in their catalogs!