Delta Yacht Builder

I was recently browsing through a magazine and saw an advertisement for Delta, in which it lists 3 or 4 large builds in the 1920's and 1930's including Delphine, and then it shows the steel bow for a 240ft newbuild.
Two questions, wasn't Delphine built by Great Lakes Shipyard?
And, does anyone have info on the 240' new yacht?