My grandparents went to St. John's Lutheran Church as my mother and I did, which at one time was where the airport runway now crosses Howell ave. I have a 1950 St. John's 100th Anniversary booklet that is interesting reading. It would appear that a number of my relatives might have lived in the area that was called New Coeln.
my email is firstname.lastname@example.org
if interested. --W. Groth