He was one of a dozen sculptors invited to compete in the Pioneer Woman statue competition in 1927,[4] which he failed to win. In 1927 he was elected into the National Academy of Design as an Associate member and became a full Academician in 1934.
Gregory is well known for his architectural sculpture.[8] Examples include bas relief panels on the structure and sarcophagus of the Huntington Mausoleum by architect John Russell Pope at The Huntington Library in San Marino, California;[9] and the larger-than-life panels, Columbia and Urban Life, on either side of the steps in John Marshall Park, Judiciary Square, Washington, D.C.[10]
^‘’Exhibition of Models for a Monument to the Pioneer Woman’’ at the Chicago Architectural Exhibition, East Galleries, Art Institute of Chicago, June 25 to August 1, 1927
^Goode, James M. ‘’The Outdoor Sculpture of Washington, D.C.: A Comprehensive Historical Guide’’, Smithsonian Institution Press, Washington, D.C., 1974
p, 81
^"Archived copy". www.archsculptbooks.com. Archived from the original on 30 November 2007. Retrieved 22 May 2022.{{cite web}}: CS1 maint: archived copy as title (link)
^Bedford, Steven McLeod. "John Russell Pope: Architect of Empire," new York: Rizzoli International Publications, 1998, p. 210.