Meet the Board

We have an active, 100% engaged board. You will often see our board members running fundraisers and representing our organization at public events. Follow our Facebook page for the latest news, and see below for brief bios of all of our board members.


Kelly Callen, Chair, Alternative Energy Committee

Kelly’s passion for historical homes was sparked when she spent nearly two years restoring a Freeland, Michigan farmhouse that had been in her family for four generations. The home was rumored to have been the birthplace of several “Rin Tin Tin” puppies. Recently retired, she spent over a decade as an Executive Assistant to famed Atlanta architect John Portman. When she told Portman about Friends’ goal to make Mimosa the oldest Net Zero home in America, he commented that this achievement “would be REMARKABLE!” Kelly, her husband Todd, and their two children, all passionate environmentalists, live in Roswell.


Scott Fillian

Scott is a marketing leader with a demonstrated history of turning complex opportunities and problems into thoughtful, practical, and understandable solutions. He has an M.B.A. in International Business and has worked as a director of loyalty programs for IHG and an analyst for US Airways. He lives in Roswell with his wife and three young children.


Steve Gibson

Steve, the founder and CEO of TalentServed, has over 20 years of nationwide hospitality industry recruiting experience. Since late 2006, Steve has served independent restaurateurs, emerging concepts, regional restaurant groups and national brands. He guides the TalentServed recruiting team, resulting in the placement of over 200 hospitality industry leaders each year with the firm’s clients. Steve is a longtime resident of Marietta, Georgia where he resides with his wife, Tiffany, their two teenage sons, and their Goldendoodle, Beau. He was the first president of Friends of Mimosa Hall & Gardens, leading the organization and helping us substantially in getting off the ground.


Gus Hadorn, Chair, Long Range Planning Committee

Gus, a retired Fulton County High School teacher, serves as chair of Earth Ministry and was previously a project administrator with Trammell Crow Residential. He lives in Roswell with his wife, Jennifer. They have four adult children. He and Jennifer are especially passionate about environmental sustainability and making Roswell more pedestrian friendly.


Bob Hagan

A passionate member of the Rotary Club of Roswell since 1998, Bob was honored by the Georgia Ensemble Theatre in 2009 with the esteemed annual “Legacy Award” for his contribution to the community of Roswell. Bob’s profession is Nursing and Assisted Living Homes Administration.  Born in Lake City, Florida, Bob has lived in Roswell since 1973. Bob serves on the board of many local charities as well as the Friends of Bulloch Hall. He is a 2014 recipient of the “History Maker of the Year Award” from the Roswell Convention and Visitors Bureau.


Michael Harris, President

Mike, chair of the Community Outreach Committee, brings over thirty years of experience in Technology Sales and Marketing. He has held sales and leadership positions at a number of technology firms and is currently the Director of Sales for VizRT, a  Broadcast Technology Solutions Provider. Mike is an avid art collector and arts patron. He also serves on the Roswell Arts Fund Board and the Roswell Roots Committee.  He was selected to serve on the Fulton County Public Art Committee which assists County Agencies and Departments in the evaluation and placement of public art. He has served on the Board of Hammonds House Museum in Atlanta and as a co-chair of Smart Collectors, a group focused on assisting collectors build their collections and their knowledge of the visual arts. Michael describes himself as a Visual Arts Addict and a History Buff. Mike’s expertise includes sales, fundraising, strategic development, and cultivating partnerships.


Scott Hitch

Scott Hitch is an attorney experienced in navigating legal issues arising in environmental, land use, renewable energy, and commercial real estate matters. He also represents clients working in music, film, television, theater, and publishing industries. Scott serves on the board of directors of the Roswell Arts Fund and the Green Chamber of the South, and he has served on the boards of the Georgia Environmental Policy Institute, Rivers Alive, and Keep Roswell Beautiful. He is a volunteer attorney for Georgia Lawyers for the Arts. Prior to opening Hitch Law LLC in Roswell, Scott practiced with several AmLaw 100 firms in Atlanta. Scott sings and plays guitar in the band Along for the Ride, which regularly performs in venues throughout the Atlanta metro area. Scott and his wife, Angie, have lived in Roswell since 2000, and are the proud parents of two teenagers.


Jessica Hodgman

Jessica is a historian specializing in 20th-century American history. Her graduate work at the University of Toronto examines late 20th-century racism in the South. She believes knowing about our past helps us live more responsibly (and more enjoyably!) now. Jessica is an editor, writer, teacher, and advocate for spaces where Americans can dialogue about difficult issues, past and present—and especially where they can celebrate what we all share in common. She hopes Mimosa will become this kind of place. 


Don Horton, Chair, Strategic Partnerships Committee

Don is a financial services executive with broad experience in new business development for wealth management, retirement planning, and fiduciary services. A former city council member, he is the chair-elect of the Roswell Arts Fund and a member of the Rotary Club of Roswell and the Rotary International. He and his wife, Gayle, live in Roswell and are the parents of two adult children.


Irene Munn

Irene, a relative of the Hansell family from Mimosa Hall, serves as legal counsel and Director of Policy for the Lt. Governor’s office. She has more than 20 years of legal experience, having served Douglas County as an Assistant District Attorney and the Georgia Sheriffs Association as Director of Public Affairs. 


Brett Player, Chair, Marketing Committee

Brett, Creative Director and Founder of PLAY, has 20 years of experience in brand communications and advertising. Brett has provided leadership for large teams of creatives, to include strategists, designers, art directors, copywriters, developers, videographers and media planners. With over 45 industry awards, he has helped many Fortune 500 companies and large non-profits succeed in their communication goals. He lives in Atlanta with his wife, Caroline, and their furry hiking companion, Muddy.


Susan Rumble, Secretary

A passionate devotee to community development, Susan is an energetic member of the Roswell Women’s Club and the Rotary Club of Roswell and she serves on the board of the Roswell Arts Fund. She's a real estate advisor for Engel & Völkers North Atlanta, with proficiency in market research and business strategies. 


Michelle Slater, Treasurer

Michelle, chair of the Events Committee, has had a love of historic homes since she was a kid growing up in Central Florida. She got her first job at Walt Disney World’s Magic Kingdom, where she was a dancer, greeter, and Disney character for seven years. She moved to Atlanta in the early ‘90s to pursue a career as a professional Country singer. Now, she is a realtor with Keller Williams Realty First Atlanta and owns an online retail business, Red Diva Vintage and Resale. Michelle is a docent for Barrington Hall and a singer with the Martin’s Landing Band.


Amy Spielman

A resident of Roswell since 2005, Amy holds a BA in Industrial Design. For almost 13 years, Amy has been working for a worldwide architecture/design/engineering/branding firm where she and her team support Fortune 500 clients in determining their immediate and future real estate portfolio needs and goals. Amy also assists other lines of business and practice areas in architectural design, interior design, branding, proposals, presentations and infographics. Previously, she was a designer with Neiman Marcus Corporate Visual Planning and Presentation. Amy and her husband have two young children. In her free time, she enjoys reading, sporting clays and taking her children to Bulloch Hall.