Source: https://www.amazon.com/Magnetic-Fields-Expanding-American-Abstraction/dp/0996272836/ref=as_li_ss_tl?s=books&ie=UTF8&qid=1508300095&sr=1-1&keywords=magnetic+fields+expanding+american+abstraction&linkCode=sl1&tag=culturetype-20&linkId=34666449a4db6bc634b705348afb5cc8