Question: Which great American architect was the mentor of Carter Manny, creator of many public buildings around Chicago?

Context articles: Henry Austin (architect)
Joseph Evans Sperry
Carter Manny
Harold Boas
Frank Irving Cooper
Emanuele Luigi Galizia
Joseph Charles Gustave Brault
Frank Lloyd Wright
Charles D. Sutherland
Armando Menocal

Henry Austin (December 4, 1804 – December 17, 1891) was a prominent and prolific American architect based in New Haven, Connecticut.
 He practiced for more than fifty years and designed many public buildings and homes primarily in the New Haven area.
 His most significant years of production seem to be the 1840s and 1850s.
Architect Joseph Evans Sperry was born in 1854 in Georgetown, South Carolina.
 He later relocated to Baltimore, Maryland, where he partnered with James Bosley Noel Wyatt to form the architectural firm Wyatt and Sperry.
 Their affiliation lasted from 1878 to 1887.
 The two probably became acquainted while working in the office of Architect, E. Francis Baldwin, where he worked from 1872 until 1876.
 With Wyatt, he designed a number of buildings around Baltimore before breaking off on his own.
 Sperry became one of Baltimore's leading architects, designing many public buildings, including churches, hospitals, and banks.
 In 1914 he was named an AIA Fellow.
 Sperry also designed several buildings at Johns Hopkins University and one building at West Virginia University.
 Sperry's most famous building is probably the Emerson "Bromo-Seltzer" Tower in Baltimore.
 Sperry's buildings were designed in a variety of styles, but overall were eclectic.
 Sperry practiced architecture independently from 1888 until he died in 1930.
Carter Hugh Manny, Jr. (November 16, 1918 – February 1, 2017 in San Rafael, California) studied architecture under Frank Lloyd Wright and Mies van der Rohe and spent his career as an architect and foundation administrator in Chicago.
 His work helped shape Chicago O'Hare International Airport, the FBI Building in Washington, D.C., the First National Bank of Chicago, and the addition to the Chicago Board of Trade.
Harold Boas (27 September 1883 – 17 September 1980) was a town planner and architect in Western Australia.
 Boas designed many public buildings in and around Perth and was an influential Jewish community leader.
Frank Irving Cooper (May 8, 1867 – October 23, 1933) was an American architect from Massachusetts who designed many public buildings during his career, including the Bristol County Superior Courthouse in Taunton, Massachusetts, and dozens of school buildings throughout New England.
 Throughout his career, Cooper established himself as an expert on improved school design and planning, serving on various committees, and authoring numerous books and papers on the subject.
Emanuele Luigi Galizia (7 November 1830 – 6 May 1907) was a Maltese architect and civil engineer, who designed many public buildings and several churches.
 He is regarded as "the principal Maltese architect throughout the second half of the nineteenth century".
Joseph Charles Gustave Brault (1886–1954) was a Canadian architect who served as Chief Dominion Architect from 1947-1952.
 As chief government architect he was responsible for many of the federal buildings constructed in this period.
 Drawings for public buildings such as Post Office Buildings and Dominion Public Buildings designed by Brault and his staff during his tenure as Chief Architect of the Department of Public Works are now held at the National Archives of Canada.
Frank Lloyd Wright (born Frank Lincoln Wright, June 8, 1867 – April 9, 1959) was a first generation Welsh-American architect, interior designer, writer and educator, who designed more than 1,000 structures, 532 of which were completed.
 Wright believed in designing structures that were in harmony with humanity and its environment, a philosophy he called organic architecture.
 This philosophy was best exemplified by the Fallingwater house (1935), which has been called "the best all-time work of American architecture".
Charles D Sutherland (1879–1957) was a Canadian architect who served as Chief Dominion Architect from 1936-1947.
 Ewart apprenticed under John Albert Ewart from 1897 to 1901 and studied at the Ottawa School of Art.
 As chief government architect he was responsible for many of the federal buildings constructed in this period.
 Drawings for public buildings such as Post Office Buildings and Dominion Public Buildings designed by Sutherland and his staff during his tenure as Chief Architect of the Department of Public Works are now held at the National Archives of Canada.
 Joseph Charles Gustave Brault, (1886-1954) succeeded Charles D. Sutherland as Chief Architect of the federal Dept. of Public Works in 1947.
Armando Menocal (July 8, 1863 in Havana – September 28, 1942 in Havana) was a Cuban painter.
 He first studied at the Academy of San Alejandro in his native city, before going to Spain in 1880 for further study with Francisco Jover; there he also became acquainted with the work of Joaquín Sorolla and the thinking of Marcelino Menéndez y Pelayo.
 He also exhibited in Spain, winning numerous awards.
 Menocal later returned to Cuba to join the Liberation Forces in the Cuban War of Independence; upon its completion, he dedicated himself to the teaching of art, returning to his alma mater as a professor of landscape painting.
 In 1927 he was named director; in 1940 he became director emeritus.
 His paintings decorated many public buildings around Havana, and today may be seen in the Museo Nacional de Bellas Artes de La Habana.
 He was also a member of Cuba's National Academy of Arts and Letters.
 He died in 1942.