No problem @RogerMore! As far as better quality of those slight nudes go, all the pictures were taken from Jared Thomas Kocka's official tumblr, where he posts all of his shoots. Your best hope to get those in better quality would probably be to contact him and ask for them.
And for the other pics, gosh, those are so old! I remember seeing those in her Wilhelmina portfolio when I first started following her, probably 5 years ago now or whenever I made this topic. Unfortunately, I don't have any idea where those pictures came from, who took them, or what they're for. My best guess might be that they're Delia's outtakes by Danielle St. Laurent, but I already went to check his website and couldn't find anything. I'm afraid any HQ copies of those pics might just be lost in the internet abyss.