Sid Sachs’s ‘Invisible City,’ Philadelphia’s bustling experimental art scene, 1956-76

<div style="margin-bottom: 1.25em;"><img src="https://www.theartblog.org/wp-content/uploaded/2020/03/Artblog-Sid-Sachs-588x441.jpg" /></div>On this 39 minute episode of Artblog Radio, Roberta interviews Sid Sachs about his multi-venue exhibition "Invisible City" (now closed to the public due to Covid-19).