Huge thanks for the comment that pointed out the Inland Chorus web site to us. I checked out the 1953 concert photo and found my grandfather (after whom I am named) right in the front center. I still have to go through the rest of the site but a quick peek at one of the programs revealed a couple of Westbrock with whom I’m not familiar (junior soprano Gregory and senior tenor Bernard J. for example). I look forward to poring through the site finding little tidbits like my aunts who were listed in that same program (12/20/1953).