Source: https://www.amazon.com/Frank-Bowling-Mappa-Okwui-Enwezor/dp/3791356585/ref=as_li_ss_tl?s=books&ie=UTF8&qid=1520136834&sr=1-1&keywords=frank+bowling&linkCode=sl1&tag=culturetype-20&linkId=b499246fc2d01900803f7175964d0e2b