Interesting how things come together over the years. A year or two ago, in one of my old model railroad magazines, I saw a World War II era ad in which a manufacturer said they were turning over all their service work to George D. Stock. I noticed the address, 83 W. Sedgwick Street, was close to Henry H. Houston School which I attended for 7th and 8th grades and had a classmate with the last name Stock. It seems now that he could have been a relative (grandson?) of George D. Stock. If only I had known then what I know now.
It is interesting to me that the first HO scale locomotive was developed in the neighborhood where I grew up, albeit over a couple of decades before I was born.