Staff and Board


Carla Ahrenholtz, Education Manager –
CarlaCarla is the museum’s Education Manager. A self-described science-nerd and history buff, Carla has worked in informal/museum education since graduating from Colorado State University in 2002. Carla is passionate about life-long learning and teaching and is thrilled to be a part of the Colorado Railroad Museum. She is currently busy building brand-new education programs for museum visitors of all ages from school groups to adults. When not at the museum, Carla can be found spending time with her friends and family, including her 2-year-old son Jamison and husband Jay. A Colorado native, Carla loves playing in the mountains, traveling, biking, gardening, wildlife and reading.

Andrea Bestor, Guest Services Coordinator & Buyer –
02 AndreaAndrea has railroading in her blood! Her father was a gandy-dancer, and her grandma and great-grandads all worked for the New York Central lines. Andrea has lived in Golden for the past 20 years, and has enjoyed watching it grow. She has worked in retail for over 10 years, and is excited to keep the Gift Shop at the Colorado Railroad Museum stocked with interesting and fun “finds!”


Jack Campbell, Chief Mechanical Officer –
06 jackJack manages the Roundhouse at the Colorado Railroad Museum, and is responsible for keeping all the rolling stock in repair. Recently he’s also been occupied with laying a lot of track, allowing us to move cars to new locations on the grounds. When not at the Museum, he also runs his own business dealing with industrial automation.





Lauren Giebler, Curator & Volunteer Coordinator –
lauren-for-website-resizedGrowing up on a cold and windy sheep farm in southern Idaho, Lauren decided farming and ranching weren’t exactly for her and off to school she went.  She graduated from Boise State University with a BA in history and a teaching certificate in secondary education, and then served two years in AmeriCorps as an environmental educator with the Fish & Wildlife Service. After winning a national award from the Department of Interior for her work, Lauren decided to pursue her MA in history at Colorado State University. She graduated in 2008 and shortly thereafter a brief contract job as a historian turned her attention towards historical interpretation and Colorado museums. Lauren joined the Railroad Museum in 2009 and has loved every minute of her work here.

Matt Isaacks, Multimedia Coordinator –
09 mattMatthew Colin Isaacks was bon in the Capital Hill neighborhood in 1982. He attended Jefferson County Open School, one of the first alternative education programs in the country, and graduated in early 2002. During that time he also studied at WarrenTech, a public trade school, and received a certification in Multimedia Communications for Business and Industry. Matt has been employed at the Colorado Railroad Museum since 2002 and has held several posistions including Office Tech and Supervisor of Guest Services. He spends much of his time working on the Museum’s online web store, producing the annual Catalog of Gifts, organizing the annual Auction of Used, Out-of-Print and Hard-to-Find Books, updating the OnCell Audio Tour and developing Museum displays. In his free time he enjoys reading, gaming, fantasy football and golfing with his son.

Steve Lee, Guest Services –
steve-website-as-hiram-resizedSteve Lee came to the Colorado Railroad Museum after teaching sixth grade for thirty-two years. He’s pretty much recovered from that. Nowadays, he wears several hats at CRRM–guest services, educational programming/presentations, and shipping clerk. (He’s especially proud of his shipping clerk moniker, “The Armadillo.”)
Pictured, Steve as “Hiram Wheeler,” a brakeman on the Rio Grande Southern. He also portrays Otto Mears, the Pathfinder of the San Juans, and the builder of the RGS. His living history presentations have garnered rave reviews across the state!


Bonnie Prater, Business Manager –
03 bonnieBonnie began her career with the museum as a volunteer in 2006 for a “Day Out With Thomas”, Halloween Train and Christmas Train. She then started as a Part-Time Guest Services Employee until the Business Manager retired and Donald asked if she would consider taking the position.  She agreed and has been in this position since 2007.  When she is not at the museum, Bonnie likes playing with her 4 parrots, fishing, playing on-line games, and target shooting.

Andrew Ridder, Guest Services –
02 andrewAndrew works in the gift shop as guest services and also manages the museum grounds.  When not working, Andrew likes soccer and skateboarding.



Mike Spera, Master Mechanic & Grants Manager –
mike-s-for-website-resized1Mike is in charge of the Museum’s steam & diesel locomotives, as well as managing funding initiatives and nominations to the State and National Historic Registers for equipment. He started volunteering at the Colorado Railroad Museum at age 8, and was mentored by a Master Mechanic of the Pennsylvania Railroad. He has also worked at many tourist railroads in Colorado. Most days, you’ll find Mike elbow-deep in grease and oil out in the Roundhouse, or working in his office in the Library. When Mike is not at the museum he is working at his own shop in Denver, restoring steam locomotive appliances.

Donald Tallman, Executive Director –
Donald-coors-field-cropped-resizedDonald is in his sixth year as the Executive Director at the Colorado Railroad Museum. Active in the community, Donald currently serves on the Boards of the Lariat Loop and Golden Visitor Center and is a member of the City of Lakewood Budget and Audit Committee. As a professional singer, he performs throughout the Denver area, and regularly performs the National Anthem at civic and professional sporting events. Donald is a member of the Colorado Mountain Club, and enjoys mountain-climbing and cooking. He and several of his favorite recipes are featured in the recently published cookbook “Denver Men in the Kitchen.”

Rebecca Taylor, Guest Services –
Rebecca 01Becki works in the gift shop as part of guest services. She is currently completing her music education degree at Colorado Christian University.  In her free time, she enjoys playing with her dog Sadie, riding her bike and playing piano.



Board of Trustees Emeritus
Charles Albi
Dave Bender
Thomas Daniels
Mike Danneman
Richard Farewell
Kenton H. Forrest
Martin Frick
Ronald C. Hill
William C. Jones
Ray Kenley

Lindsey Ashby
Jim Barton
Al Blount
Michael Davis
Larry Dorsey
Walter Downing
Bill Henderson
Roy Johnson
Sharon McGee
Steve Parker
William Robie
Dave Ropchan

Advisory Board
John Bush
Jack Campbell
Cornelius Hauck
Randy Lee
Richard Luckin
Linn Moedinger
Mike Porter
Michael Ramsey
Henry Reynaud
Dave Schaaf



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