Staff & Board


Farmland Manager

Altfrid Krusenbaum | Farmland Manager

Altfrid Krusenbaum and his wife, Sue, developed and operated Krusen Grass Farms, LLC, a 450-acre certified organic Dairy and Beef operation from 1990 until 2015. There they trained interns and sharemilkers as well as hosting educational events for the community. Since his retirement as an active farmer in 2015, he supports the work of Yggdrasil Land Foundation as their Farmland Manager in Wisconsin. In addition, he runs Krusen Grass Consulting, a dairy and beef grazing consulting business and works as the On Farm Education Director for the Dairy Grazing Apprenticeship Program. Over the years he has been active in serving government and private organizations promoting and helping others understand organic grazing farming practices. Altfrid was born, raised, and formally educated in Germany and immigrated to the US in 1986.



Rebecca Faust | Administrator

Rebecca Faust joined Yggdrasil in 2016 as the Administrator. Prior to joining Yggdrasil, she worked in various industries, in both the for-profit and non-profit sector. She graduated from the University of Wisconsin-Madison with degrees in Psychology & Women’s Studies and went on to obtain her master’s degree in Industrial & Organizational Psychology. She lives in southeastern Wisconsin with her husband and three children.

Board of Trustees


Carol Andrews | President

At-large Member

Carol has long been a strong advocate for land conservation and sustainable agriculture. She is an active member of the Temple-Wilton Community Farm, and President of the associated nonprofit, the Educational Community Farm. Carol is a founding member of the Washington (New Hampshire) Conservation Commission, a member of Washington’s Land Protection Committee, and former Executive Director of the nonprofit NH Association of Conservation Commissions. Carol lives in western New Hampshire.

John Bloom |

At-large Member

John Bloom is Vice President of Organizational Culture at the RSF Social Finance. The purpose of organizational culture is to tend to the reflective capacities of RSF, including how we articulate and practice our values in internal relationships and with our clients, how we learn as an organization, and how we manifest those values and practices through our public voice. John has worked with over 100 non-profits over the last several years in the areas of capacity building and culture change. He has led many workshops, lectured, and written about aspects of money and governance for non-profits. John has founded two non-profits, served as a trustee on several, and worked as the administrator at an independent school before joining RSF. He has written extensively on many aspects of charitable organizations, associative economics,  life as an active member of a 29 year old biodynamic CSA, and on the topics of money and philanthropy, including The Genius of Money—Essays and Interviews Reimagining the Financial World. He lives in San Francisco.

Bob Bower | Treasurer

Michael Fields Agricultural Institute Appointee

Mark Finser |

RSF Social Finance Appointee

Mark Finser serves as Chair of the Board of RSF Social Finance. To further RSF’s work in building the field of social finance, in 2015 Mark also began serving as Executive Chair of Capital Management, Public Benefit Corporation, a subsidiary entity of RSF. Mark was a founding member of the group that revitalized RSF in 1984, and served as President & CEO of RSF until 2007. Mark also works with a select group of high net worth individuals and families to develop a values statement and strategy to deploy their financial resources in a way that reflects their values. He is often asked to serve as an independent Trustee for families and multigenerational beneficiaries. Mark is a presenter in the U.S. and abroad on all aspects of the emerging social-finance arena. He is an active member of the social finance community, serving as a founding board member and Chairman of New Resource Bank. He was also a member of the founding board of B Lab. Mark is an advisor to the Business Alliance for Local Living Economies (BALLE) and serves on the board of Ginungagap Foundation. His interests include biodynamic agriculture, integrative medicine, and meditation. He lives in Mill Valley, California, with his wife and family.

Sonja Gorsch |

At-large Member

Sonja Gorsch lived on a biodynamic farm as a teenager, worked on a biodynamic farm for a year in the US and buys all her produce from a Demeter licensed farm near her home in Germany. She teaches part time at a Waldorf school and has been on the board of a nonprofit foundation that supports art, education and science inspired by Rudolf Steiner for many years. Since her parents emigrated to the United States more than 30 years ago, she visits the US every year and is very conscious of the need to bring health to the soil and to help farmers to farm the land in harmony with nature, animals and people.

Secretary/Vice President

Dorothy Hinkle-Uhlig | Secretary/Vice President

Biodynamic Association Appointee

Dorothy Hinkle-Uhlig is committed to finding ways to support biodynamic and organic farmers so that they can rightfully provide for themselves, steward the farmland, and offer their healthy bounty to others.  She is also seeking to understand how to help money flow healthily within society.  Because of continually changing life tasks she has acquired various skills. 

Katrina Steffek |

RSF Social Finance Appointee

Katrina joined the board of Yggdrasil in 2014 after serving as Administrative Coordinator for ten years.She is currently the Chief Operating Officer at RSF Social Finance where she executes on RSF's strategic priorities and client engagement goals by providing vision and guidance to the Client Development, Social Enterprise Lending Business Development, Philanthropic Services, and Marketing & Communications teams. She partners with other senior leaders to guide the effective use of organizational resources, and inspire a vibrant connection to RSF's purpose, values, and operating principles. Her previous areas of expertise include meeting and retreat facilitation, leadership development, human resource management, event planning, agricultural land trust administration, and non-profit corporate governance. Before joining RSF in 2004, Katrina held positions with the UC San Diego Ethnic Studies Department, City of San Diego Planning Department, UC San Diego Food Cooperative, and San Diego Environmental Health Coalition. She also served on the board of GirlVentures for five years and is passionate about the empowerment of women and girls, and women’s leadership in the fields of finance and social enterprise. She graduated with honors from UC San Diego with a BA in Urban Studies & Planning and received a Master of Nonprofit Administration degree from the University of San Francisco.

Christopher & Martina Mann |

Trustees Emeriti

Christopher Mann was born in London in 1930, to pioneer teachers of the first English speaking Waldorf school. He eventually became a Waldorf teacher himself and developed his first community development in Sussex, called Michael Fields.  In the early 1980’s, Christopher and his wife Martina purchased their first parcel of agricultural land in the US and created a community farm.  They also founded the Michael Fields Agricultural Institute in East Troy, WI and served on its Board of Trustees for many years. Throughout his lifetime, Christopher has developed enterprises and land trusts to support biodynamic, organic and sustainable agriculture, along with research and education. Of these, the Yggdrasil Land Foundation was founded as a support organization to RSF, the BD Association and Michael Fields Agricultural Institute. Christopher is now in his retirement and continues to find joy in meeting pioneers involved in new Anthroposophical and spiritually based initiatives.

To learn more about Yggdrasil Land Foundation,
check out Our Story, Core Practices, Land & Community and Protected Lands.