In the late 60s, he formed a band, A More Perfect Union, and developed a multimedia, rock theater adaptation of Edgar Lee Masters' Spoon River Anthology.
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Robinson also illustrated several books, among these are editions of Dostoyevsky's The Brothers Karamazov (1933), Edgar Lee Masters' Spoon River Anthology (1941), and Herman Melville's Moby Dick (1942).
A close friend of Edgar Lee Masters, author of Spoon River Anthology (1915), Claytor presented her collection of signed first editions, letters, manuscript poems, and other materials that Masters had given her to Princeton University.
The dustjacket explains that this county is located “east of Spoon River, west of Winesburg, and slightly north of Raintree County.” Its county seat is the actual rural town of Somerset next to the Mississinewa (River) Reservoir.
A Northern Spy apple tree figures in the poem "Conrad Siever" in Edgar Lee Masters' Spoon River Anthology.
They did various productions – Spoon River Anthology, a concert titled From Our Bag, Pirandello's As You Desire Me, and a double-bill titled Those Mad Victorians, which the company took to Caltech in the late 1960s.