SoHo New York was rundown when I moved there in the early 1970’s. But one day, in a grungy old building, I discovered a remnant of SoHo’s industrial past. Sol Poler and Hymie Ehrlich were spinning metal on century-old machines. I didn’t realize there was something hidden underneath the dirt and grime of SoHo buildings from the 1800’s. I soon discovered Soho’s forgotten history.