Janey, this may surprise you but I did a little of my own research. Turns out Vandervoort's was a department store in the St Louis area, similar to my Famous Barr Special over here:
https://stlouis.craigslist.org/zip/d...287247436.html
I still don't know who made it, but will go with New Home, as I think this is an older cousin to the other machines I had to which I linked. I am basing this solely on the needles and bobbins used.