The following are but a few of the organizations, causes and individuals that Dr. Vanderhaar supported and believed in. He was a founding member and active in many of these organizations.

Pax Christi International • The International Catholic Peace Movement

Pax Christi USA • The National Catholic Peace Movement

Pax Christi Memphis • The Memphis Chapter of the Catholic Peace Movement

Mid-South Peace and Justice Center • Commited to develop communities of peace, social justice and human rights through education and nonviolent action.

M.K. Gandhi Institute for Nonviolence • Founded in 1991 by the grandson of Mahatma Gandhi, Arun Gandhi, and his wife, Sunanda in Memphis, TN.

World Cataract Foundation • Helping the world see.

Gandhi-King Conference on Peacemaking • Hear the modern authorities on nonviolence speak on issues critical to a progressive, peaceful society.

Mid-South Interfaith Network for Economic Justice • Coalition of members of the faith community who seek justice in the workplace.

Christian Brothers University • Catholic, Lasallian University in the heart of Memphis, TN.

Emmanuel House Community • A residential community in the Catholic Worker tradition located in the heart of Memphis.