The article is sort of focused on comparing features and values of the "early" cars vs the Mk IIs, not sure why they only used the MkII on the cover.
I don’t use facebook, so not familiar at all on how the photos work there.
For this forum, there is a thread about inserting pictures… you need to use a "3rd party" hosting site.
I’ve used IMGUR and ImageShack, PhotoBucket is also very popular and I’m sure there are a bunch of others,
then the photo appears right in the post. Here is that blue MkII at Hershey in October: