Cannon Moss Brygger & Associates is a Mid-western architectural firm offering expertise in a broad range of building types. Our offices are located in Sioux City, Iowa; Grand Island, Nebraska; and Spencer, Iowa.

We believe that the design of our built environment directly affects how we live, work, and play. We as designers have the opportunity and responsibility to enhance the quality of people’s lives through design.

By working with the client, we discover their needs, desires, challenges, and opportunities. We build upon this understanding to create a distinct environment that is appropriate for its time, place, and function. The result of our process is facilities that are unique, attractive, and functional.

Cannon Moss Brygger & Associates -- building on a foundation of distinction by providing exceptional design services with the highest level of integrity and creativity.

Core Values

  • Integrity
  • Creativity
  • Service
  • People - the people we work for, and the people we work with

Core Purpose

Enhance people's lives through the design of our built environment


The Cannon Moss Brygger & Associates Difference...

  • Experience with a broad scope of projects by a highly skilled professional staff.
  • Thorough investigation for project clarity.
  • Painstaking attention to detail for maximum efficiencies.
  • Capable of designing and managing projects ranging from small and simple to large and complex.
  • Truly listening to clients' needs, desires and concerns as we consider all the possibilities of each project.
  • Leadership and vision to guide the building owner through the process, so the end result is a true reflection of the owner -- not just the architect.
  • Our process starts with listening, results in maximum value, and ends in long term professional client-architect relationships.


The Cannon Moss Brygger & Associates Timeline

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.
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.
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.

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.

1914 Steele, Elmslie, and Purcell team awarded the drawing and superintending the building of the Woodbury Courthouse.
1940 Arnold leaves firm and Beuttler practices on his own.

1953 The firm Beuttler & Son is formed. James Duffy joins the firm.

1963 William Beuttler's son forms William Lee Beuttler Architect & Associate after his father retires. Duffy forms James M. Duffy & Associates, Architects.
1971 The William Lee Beuttler Architect & Associate firm name changes to Beuttler Associates Architects.

1972 Cannon & Associates was founded in Grand Island, Nebraska by James Cannon.

1978 Beuttler Associates Architects change the firm name to Beuttler, Olsen, Lee Architects. Duffy, Mannes, Brygger, Architects/Engineers Partnership is formed.

1981 Architects Collaborative was founded in 1981 by Paul Maurer and Rick Dean in Spencer, Iowa.

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.

1987 The company name changes to Duffy Ruble Mamura Brygger to reflect current ownership at the time.

1988 Architects Collaborative acquired Kenninger, Galvin and Associates of Spencer.

1990 Architects Collaborative adds engineering to their services.

1995 The Sioux City office changes to Ruble Mamura Moss Brygger Architects, reflecting stockholders at that time.
1998 E.F. Kooker and Associates merges with Architects Collaborative.

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.

2004 The name Cannon Moss Brygger & Associates is adopted as the name for the Sioux City office.
2006 Cannon Moss Brygger & Associates and Architects Collaborative join forces. Architects Collaborative adopts Cannon Moss Brygger & Associates name at their Spencer office.