top of page


Executive Director
Peter Arnold

Graduated magna cum laude with a Law Degree from University of London. Emigrated to USA in 1987. Obtained a Masters in Museum Studies from University of Leicester in 2002. In 2001 appointed Executive Director of Old World Wisconsin. In 2007 appointed President of Genesee Country Village & Museum. Appointed Executive Director of Yakima Valley Museum in 2017. Under his leadership, in 2022 the museum was awarded re-accreditation by the Alliance of American Museums.

Director Yakima Valley Museum Peter S. Arnold.jpg
Director of Development
& Board Relations
Susan Duffin

Graduated magna cum laude in Education from University of Illinois at Champaign-Urbana. Susan’s love of education and history led to a career in history museums in Wisconsin, New York and now Yakima. Her work in Development includes administration of all aspects of development programming, major donors, corporate/institutional support, annual giving campaigns, board relations, grant administration, data management, communications and marketing, strategic planning and special events.

Chief Curator of
Collections and Archives
Mike Siebol

Graduated from Washington State University in Anthropology and History.  Worked as an archaeologist in Southeastern Oregon, Montana, Wyoming, and in the lithics lab at WSU.  Previously worked at the WSU Museum of Art, WSU Anthropology Museum, Columbia Gorge Discovery Center and Museum, and the North Cascades National Park.  Joined the Yakima Valley Museum in 2001. Mike has been a Director on the Washington Museum Association Board and on the Yakima Historic Preservation Commission. 

John Baule

Graduated summa cum laude from the University of Dubuque, Iowa with a BA in mathematics and physics. He then obtained an MA in History Museum Studies from Cooperstown, University of New York. After working as Director of several historical societies, John joined the Yakima Valley Museum as its first professional Director in 1992 and served until his retirement in 2016. He was appointed Director Emeritus at that time and he still works part-time as the museum’s archivist. John oversaw a dramatic expansion of the museum during his tenure and was responsible for the museum being accredited by the Alliance of American Museums. He has received multiple honors and awards.

Curator of Exhibits
Heath Lambe

Acquired an Associate Arts Degree in Graphic Communications, with Honors from Collins College, Tempe, AZ. Graduated with a Bachelor of Fine Arts: Double Major: Sculpture & Video, cum laude from Cornish College of the Arts, Seattle, WA. A highly skilled fabricator with extensive knowledge of a wide variety of shop tools. Volunteer: Board Vice President Yakima Maker Space and Commission Member with Yakima Arts Commission.

Building  Supervisor
Bart Hollar

Love of country has been a thread running through Bart’s life. Born on an Air Force Base in Madrid Spain, Bart’s family moved back to the United States when he was just three years old.  His family settled in Washington State where he has lived most of his life. Bart joined the United States Marines in 1983 as a mechanic. Those skills have stayed with him. He now enjoys building computers, playing golf, and working on his home which he shares with his wonderful wife.

Guest Services
Guest Services Manager
Volunteer Coordinator
Gertie Desallier (they/them)

Studied at The Evergreen State College in Olympia, Washington. Gertie was born and raised in the Yakima Valley and has always had a passion for working with our community. They are so thrilled to be a part of the Yakima Valley Museum team! Outside of work you can find them with a book in their hand and a cat in their lap.

Desallier, G soft edges.jpg
bottom of page