Andy,
That is a different page... I have "liked" that one for quite some time also. I have no idea how old the page is. I believe their focus is war-time pictures of halftracks. The other one "White Half Track Enthusiasts" just started on April 6, according to their pinned post. (IMO)Their focus is surviving halftracks and where they ended up post war, much like this site. Both great Facebook pages. Either way, it is nice to share and converse with like-minded people like I have encountered here and Facebook.
Doug