I just checked my personal library, and I find a total of 18 titles for G. Campbell Morgan. I think all but one of them are available either here or at my site. ("Discipleship" by GCM is the one title I'm not sure of. I have it, but it is in poor order. When I get around to it, I'll clean it up and make it available.)
1923 is a key date for much of the work done at sites like this one. That is the copyright public domain cutoff date. Anything done prior to that year is public domain. About half of Morgan's works were published prior to 1923. Those are his public domain works. Several years back, a small team of module builders worked hard at mining the "G. Campbell Morgan Archives" to turn the available public domain works into modules. Our focus was on his expository works. The result were books like these being made into modules: Malachi's Message to the Men of Today, The Acts of the Apostles, The Crises of the Christ, The Gospel According to Mark, The Gospel According to Matthew, The Great Physician, etc. These titles are all public domain. I also know that some other individuals not associated with the group just mentioned also built some GCM modules.
BibleSupport user "David Psalms" somehow got permission from Mr. Andrews to turn The Parables and Metaphors of Our Lord into a module. We jumped at that, because in my opinion, it was one of Morgan's best works. Alas, it is my understanding that it is the only Morgan work published after 1923 legally available as a module.
I don't remember if we have all of Morgan's pre-1923 titles available as modules. I do believe we have most of them, and the best of them, available.
Even if someone has the "raw materials" from the above mentioned site, they would have to have copyright permission to publish the 1923+ titles here in any fashion. Of course, anything published in 1922 and earlier is public domain. Those raw materials not yet converted to modules would make great fodder for module building.