Since so much progress has been made with the Weaver materials I decided to revisit a more complex question that I had about Lionel catalogs online, between 2000 and 2008. A number of folks have mentioned in posts over the last few years, on this Forum and others, that Lionel had changed to a new website at some point prior to 2010. One result of this migration was apparently that catalogs for the years prior to the changeover were no longer accessible. Having been out of the hobby between 2002 and 2016 I do not recall what earlier version of the site looked like, or how it may have hosted the catalogs.
A little digging over the last few days has provided some answers. Back in September of 2016 I stumbled across a broken, and oddly-coded, web page that came to me in a Google search. You can see this page here:
It turns out to be a partial list of Lionel's post-2000 catalogs hosted online. Broken and oddly-coded because you enter the page in the middle, and there's no way to scroll up to it's top (the scroll bar won't let you). Partial because, given what you are able to access, it's still not complete. Years 2006 and 2007 are missing.
However it is a start for finding the contents of the 2000 to 2008 catalogs because, although everything is not there, you can click on what is there and it will take you to the previously missing catalogs, as long as the year is listed.
Here's the kicker -- what you will see is for 2000 to 2008 are not PDF copies of the actual print catalogs, but web representations of them. In other words Lionel created a set of web pages, for each of its paper catalogs in that range of years, representing the corresponding catalog's contents so that it could be read using a web browser. Each of these sets has a cover page, a table of contents, a "Letter from the CEO" page, etc., followed by web pages showing the products that are in that paper catalog, just like the corresponding paper catalog, but formatted for web browsing instead.
On the other hand, what you see for 2009, 2010 and apparently part of 2011 are links to the PDF format files we've become accustom to, and which are accessible elsewhere on the current site.
Lastly, more good news -- using Google's "Site Search" I was able to locate the missing web catalogs for 2006 and 2007.
Here are the missing links:
K-Line by Lionel Volume 1
K-Line by Lionel Volume 2
Be aware that a small number of pictures are missing from the web catalogs, largely in the later years in the sequence 2000-2009. These are generally not the product pictures that would be so important to each of us, but the ones on the cover page, the welcome page, and the "Guide to Product Features" pages.
Many thanks to @rplst8 for pointing out the availability of, and syntax for, Google Site Search in his post:
Go at it and have fun!