He moved to Southern California in 1917, completed the Los Angeles Public Library after Goodhue's 1924 death, and also pursued his own commissions, including a number of Episcopal churches. With Clarence Stein he wrote "The architecture and the gardens of the San Diego Exposition".
His son, Carleton Winslow, Jr. (1919–1983) was also an architect, specializing in churches in Southern California, and an architectural history professor and author.
Work
St. James Episcopal Church, South Pasadena, as associate of Cram, Goodhue & Ferguson, 1907
multiple buildings at the Panama–California Exposition, 1915, in collaboration with Bertram Goodhue; solely credited for certain structures including the Botanical Building
multiple buildings at the Bishop's School (1916 Bishops Chapel, 1930 Bishops Chapel Tower, 1930 second story and dome of Bentham Hall, 1934 Wheeler Bailey Library), some with architectural sculpture, La Jolla, California
Casa Dorinda, private mansion for Henry W.H. Bliss and wife Anna Dorinda Blaksley, Montecito, California, 1916