Judy, On a map (c1916), I found a school at 15th & Walnut Sts. It does not give the name of the school but I think it is Wetherill. This is the school closest to 431 E. 12th St., Chester, Delaware Co., PA but of course this does not mean it is the school your father attended. If he went to a Catholic School it was most likely St. Michael's at 7th & Welsh Sts. If he graduated from Chester High School there are year books (with pictures of the graduates) at the DCHS. Happy hunting, Helen (DCGS)