There was a matching SG chip sold to a Morris address by Taylor & Co. Probably a Harp mold. We can't assume every "SG" chip ever made went to the same place, but if the cord mold chips were IDd independently somehow then this would seem to support the ID.
I may have something on Seven Gables in my notes. I'll check soon.
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"SG", mold unspecified, art nouv. block letters
Wm. Spellisy, 618 North Ave., Morris, IL
1000 in 1943
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