Draftsman/Field Superintendent, Perkins and McWayne, Architects, Sioux Falls, SD, 1934-1942; Site Planner/Designer, Giffels and Valet, Architects and Engineers, Detroit, MI, 1942-1943; Giffels and Valet designed military-related buildings such as the Auxiliary Air Station, Chincoteague, VA, c. 1944, when Perkins was in this Detroit office. Draftsman, Metcalf -Hamilton, Kansas City Bridge Companies (MHKCB), c. 1943-1944; this firm was engaged in road/bridge building in AB Canada, BC Canada and AK during this time. Draftsman, Henry L. Gogerty, Architect, Los Angeles, CA, c. 1944; Designer, William Glenn Balch and Louis L. Bryan, Architects, Los Angeles, CA, 01/1945-1953; Partner, Balch, Bryan, Perkins, Hutchason, Architects, Los Angeles, CA, 1953-before 1970; Perkins's name did not appear in the American Architects Directory, (New York: R.R. Bowker Company, 1970), although he was listed in the 1956 and 1962 editions.

In 1955, Perkins indicated having been NCARB Certified. At that time, he was a member of the American Institute of Architects, Southern California Chapter.

Coursework, Augustana College, Sioux Falls, SD, 1931-1934; B.Arch., University of Minnesota, Minneapolis-Saint Paul, MN, 1934-1941;

Alpha Alpha Gamma, University of Minnesota, Minneapolis-Saint Paul, MN, 1935; Scarab, University of Minnesota, Minneapolis-Saint Paul, MN, 1936.;

Born in South Dakota, Perkins died in San Bernardino County, CA, at the age of 83. His last residence was in the 92392 zip code of Victorville, CA.

His father was the noted architect Robert A. Perkins. According to the National Park Service, Robert Perkins "...received his B.S. degree (1908) in architecture and a M.S. degree (1917) from Armour Institute of Technology (IIT) in Chicago. He lived in Sioux Falls from 1912 and 1916 and had his own practice before going back for his master’s degree." (See "Pierre Masonic Lodge,"Accessed 05/20/2010.) Perkins worked in a Sious Falls, SD-based partnership with the architect Albert McWayne from 1918-1954; Perkins married Eva Olive Zeller on 09/29/1911 in Sioux Falls.

John Loring Perkins married in 1938, and had had 1 child.

Member, California Association of School Administrators, 1953-1955; Member, Los Angeles Chamber of Commerce, 1952-1955; Member, Los Angeles Sportsmens Club, 1953-1955;