What Pennsylvania artist and collector built his tile factory, museum, and house using coarse-textured and unconcealed reinforced concrete, an especially unusual building material for a house?

Of what artist did a writer for the Chicago Daily News state in 1934: “[He] might have developed into America’s greatest painter had he not chosen to become America’s greatest art teacher”?

Answers here~ https://schristywolfe.com/2015/06/24/june-24/