I can ask Holly to write him, if you think it would take that?
That might be a good idea. I'm not sure how good of a result you will get from an e-mail though, as I suspect the ministry will get a lot of them and they might not get the attention you need.
Perhaps a phone call to them might do it.
I would make a point of the fact that this was a reference that they used in their own video and that you would like to find the documentation for it and where they got it from.
If they try to refer you back to the video, itself, I would again make the point that you're trying to find the "source material" -- and thus "where they got it from..." to be able to use it in the video at all...
Good points.
I’ll try and phone sometime this week.