Jim, I think the date of 1959's is wrong for the Erie marked 14 skillet they show and, according to the history, Griswold was no longer in Erie in 1959. There were no small logo skillets in size 2, 11, 13, and 14 but there are # 11's and 14's with the late handle hole style. I would think, but I can't say for sure, the late handle large skillets were made quite a bit earlier than the 1950's.
Also, we have seen a master pattern of a 13 with the small trademark, but it looks like it was a prototype pattern and wasn't put into production.