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Credit: Mike Morgan

David Dowell, AIA, principal, El Dorado, Kansas City, Mo.

Dowell received a bachelor's of art in Architecture from Washington University in St. Louis and a master's of Architecture from the University of California at Berkeley. He joined El Dorado as a partner in 1998. In 2008, he received an Award for Distinction from Washington University's Sam Fox School, and in 2011, he became a GSA National Peer Reviewer. He has taught at the Technical University in Dresden, Germany; Washington University in St. Louis; Lawrence Technological University in Michigan; and the University of Kansas. Dowell's current interests include the integration of landscape and architecture as well as improving the essential infrastructure and experience of Kansas City. El Dorado's work is widely published and has received numerous accolades. The firm's four principals frequently lecture on their work and are active in academia, both locally and nationally.


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Credit: Mike Morgan

Andrew Mackinnon, IALD, IES, principal, Gabriel Mackinnon, Ottowa, Canada

Mackinnon is partner at Gabriel Mackinnon, having worked at the firm since 1997. His experience includes projects that cover the range of architectural design: city master plans; institutional, commercial, and residential spaces; and many custom fixture designs. He has presented at a number of lighting industry conferences, including Lightfair and Strategies in Light. He is also active as a consultant in lighting research, assisting the National Research Council of Canada in developing prototype luminaires. He has a particular interest in the evolution of luminaire forms as they adapt to new lighting technologies, including the design of several custom LED fixtures in both decorative and functional applications.


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Credit: Mike Morgan

Maureen Moran, IALD, IES, principal, MCLA, Washington, D.C.

As the owner and managing principal of MCLA, Moran leads a talented team in the design of projects from historic preservation to parks, museums to universities, offices to sites and façades, on sites worldwide. Her portfolio has been honored with numerous international design awards and widely published in leading design journals. With more than 30 years in the profession, she is a respected and popular author, speaker, and teacher.


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Credit: Mike Morgan

Linnaea Tillett, IES, principal and founder, Tillet Lighting Design, Brooklyn, N.Y.

Tillett, a lighting designer and environmental psychologist, has extensive experience in public landscape and architecture, light art, fine art, and luxury interiors. Tillett has collaborated with leading architects including Maya Lin, Toshiko Mori, Beyer Blinder Belle Architects & Planners, Michael Van Valkenburgh, Olin, and Quennell Rothschild. She frequently speaks on lighting, public space, and the psychology and physiology of lighting, and has been on the faculty of the Master's of Fine Arts in Lighting Design Program at Parsons The New School for Design since 1992. Tillett holds master's and doctorate degrees in environmental psychology from the graduate school at the University Center, City University of New York, and a bachelor's degree in philosophy from University College London.