Born in Greeley, Colorado, Mosher moved to Los Angeles as a young child. Mosher's interest in architecture and design began early: at age nine he built a workbench in his family's garage.[4] According to Mosher's wife, Joany, Mosher was first introduced to architecture through a neighbor involved in Pasadena real estate development.[3] In 1932, Mosher became one of the first architectural apprentices in Frank Lloyd Wright's Taliesin Fellowship, an architectural apprentice program. Mosher stayed in the group until 1942.[5]
After earning his degree in 1944, Mosher moved to La Jolla and apprenticed with the firm Myron Hunt & H. C. Chambers. It was there where he met his future business partner, Roy Drew. After completing his state architecture exams and working for eight months at the firm of Harwell Hamilton Harris in Los Angeles, Mosher returned to San Diego to found his own firm in 1946. Mosher's father purchased a collection of buildings in La Jolla known as the Green Dragon Colony, a former artist's colony, to serve as the firm's headquarters. Roy Drew joined as a partner in 1948.[4]
The San Diego region, like much of Southern California, underwent dramatic growth in the immediate postwar years, in turn, providing fuel for the growth of Mosher and Drew's firm. "We got more work and just chugged away at it," Mosher recalled about the period, in a 1988 interview.[3] Mosher's career was advanced when his design for a home for Herbert and Minerva Kunzel of Point Loma, received media exposure by way of Sunset magazine. This article in turn came to the attention of the editor of House Beautiful, Elizabeth Gordon. Gordon, impressed with Mosher's understanding of architectural theory, invited him to New York City for a two-year stint as architectural editor for the magazine.[3] Mosher accepted the offer. During the period at House Beautiful, Mosher interviewed his hero, Frank Lloyd Wright for a special 1955 issue of the magazine. In preparation for the issue, Mosher shadowed Wright around his studio, Taliesin, in Spring Green, Wisconsin over the course of two separate weeks.[6]
After the stint in New York City, Mosher returned to his practice in San Diego. Mosher's design of the Golden Door Spa in Escondido, opening in 1958, illustrated his aptitude for historical architecture, as well as his usual modernism. The Spa's design was heavily informed by 16th and 17th century ryokan, traditional Japanese inns.[3]
In the mid-1960s, Mosher was hired by the newly created University of California, San Diego to be executive architect for the first building of the university's second college, later after naturalist John Muir. Shortly thereafter, he was designated to lead a team of architects to design the remainder of the college's buildings.[7]
^Besinger, Curtis (1995). Working with Mr. Wright: What It Was Like. New York, NY: Cambridge University Press. p. 301. ISBN0-521-48122-8.
^Watts, Jennifer A. (2012). Maynard L. Parker: Modern Photography and the American Dream. New Haven, CT: Yale University Press. p. 115. ISBN978-0-300-17115-0.
Jarmusch, Ann (4 April 1999). "Celebrating 50 years of fine design". San Diego Union-Tribune. p. H-2.
Jarmusch, Ann (1 August 1999). "The Partnership - Roy Drew and Robert Mosher take different approaches to the same destination —- shaping the look of San Diego". San Diego Union-Tribune. p. H-1.
Jarmusch, Ann (8 February 2004). "Saluting Modernism". San Diego Union-Tribune. p. I-1.
Jarmusch, Ann (8 February 2004). "A house in play". San Diego Union-Tribune. p. I-5.
Chute, James (10 July 2014). "Embracing the New - Historical Society opens state-of-the-art space with a showcase of La Jolla's midcentury modernism". San Diego Union-Tribune. p. ND-32.
"San Diego's Built Environment - Architectural Landmarks". San Diego Union-Tribune. 16 November 2014. p. SD-2.
Showley, Roger (28 July 2015). "Postwar Architect 'Saved' the Coronado Bridge". San Diego Union-Tribune. p. A-1.
