Very interesting. I didn't hear about any machine quilting until the 1970's. I started getting Quilter's Newletter and they talked about it. I didn't start seeing many quilting type feet until about the 90s. I wouldn't even try it until abround 2010. Always takes me a while to try anything new. Same with clothing styles, I start liking them about the time they change.
Very interesting replies.
I am very thankful to whomever brought this to popularity. Syre is alot faster and easier on my hands than hand quilting.