Grosvenor was one of the 10 artists that founded the cooperative
Park Place Gallery in New York City, open from 1963 to 1967. The other founders of the gallery included
Mark di Suvero, Dean Fleming,
Forrest Myers,
Peter Forakis,
Leo Valledor, Tamara Melcher, Tony Magar, and Edwin Ruda. One of his best known sculptures is
Tapanga (1965), originally exhibited in the mid-1960's and later realized in a monumental version at the
Storm King Art Center. His work has helped define minimalism and was included in the seminal group exhibitions,
Primary Structures (
Jewish Museum, 1966), and
Minimal Art (Gemeentemuseum Den Haag, 1968). His choice to work with rugged materials and found objects following the 1960s distanced him from minimalism. Grosvenor seldom spoke of the meaning behind his work and rarely gave his works titles. ==Art market==