| 1896 |
William La Barthe Steele joins the Louis Sullivan firm under Chief Draftsman George Elmslie. Frank Lloyd Wright and William Purcell were former employees of Sullivan.
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| 1899 |
Steele leaves the Sullivan firm to gain additional experience. Over the next five years Steele works for firms in Chicago, Illinois, and later on Pittsburgh, Pennsylvania.
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| 1904 |
Steele joins W.W. Beach in Sioux City. One year later the firm Beach & Steele is established with the partnership staying together for two years until Steele decides to go out on his own.
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FOUNDATION OF CMBA
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| 1911 |
William Beuttler and Ralph Arnold’s join W.W. Beach. One year later Beuttler and Arnold leave Beach’s firm and form the Beuttler Arnold firm. Although the firm has had many names over the years, Cannon Moss Brygger & Associates is directly connected to William Beuttler, and it is considered the foundation of the firm.
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| 1914 |
Steele, Elmslie, and Purcell team awarded the drawing and superintending the building of the Woodbury Courthouse.
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| 1940 |
Arnold leaves firm and Beuttler practices on his own.
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| 1953 |
The firm Beuttler & Son is formed. James Duffy joins the firm.
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MODERN ERA OF FIRM BEGINS WITH JAMES DUFFY
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| 1963 |
William Beuttler's son forms William Lee Beuttler Architect & Associate after his father retires. Duffy forms James M. Duffy & Associates, Architects.
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| 1971 |
The William Lee Beuttler Architect & Associate firm name changes to Beuttler Associates Architects.
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| 1972 |
Cannon & Associates was founded in Grand Island, Nebraska by James Cannon.
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| 1978 |
Beuttler Associates Architects change the firm name to Beuttler, Olsen, Lee Architects. Duffy, Mannes, Brygger, Architects/Engineers Partnership is formed.
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| 1981 |
Architects Collaborative was founded in 1981 by Paul Maurer and Rick Dean in Spencer, Iowa.
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| 1982 |
The Sioux City firm merges with Beuttler Olsen Lee Architects and the firm name becomes Duffy Beuttler Olsen Brygger Architects/Engineers. James Duffy and partners purchase the firm he originally started with in 1953.
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| 1987 |
The company name changes to Duffy Ruble Mamura Brygger to reflect current ownership at the time.
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| 1988 |
Architects Collaborative acquired Kenninger, Galvin and Associates of Spencer.
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| 1990 |
Architects Collaborative adds engineering to their services.
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| 1995 |
The Sioux City office changes to Ruble Mamura Moss Brygger Architects, reflecting stockholders at that time.
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| 1998 |
E.F. Kooker and Associates merges with Architects Collaborative.
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| 2000 |
RMMB principals, along with two employees of Cannon & Associates purchase assets from James Cannon. The Grand Island office, the largest architectural office between Lincoln and Denver, becomes know as Cannon Moss Brygger & Associates.
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| 2004 |
The name Cannon Moss Brygger & Associates is adopted as the name for the Sioux City office.
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| 2006 |
Cannon Moss Brygger & Associates and Architects Collaborative join forces. Architects Collaborative adopts Cannon Moss Brygger & Associates name at their Spencer office.
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