The Coalition for the Homeless of Central Florida provides services to the area’s homeless, with support from individuals, businesses, philanthropic and faith-based groups. Contact Trinette Nation.

The Progressive Interfaith Alliance formed in Delaware in 2009 to focus on finding ways to ease poverty in its area. It now works on a variety of social justice issues. Contact the Rev. Michael Smith of the Unitarian Universalists of Southern Delaware in Lewes.

The Coalition for the Homeless implements programs to help end mass homelessness in New York City. According to their website, they provide services to more than 3,500 homeless people in New York each day.

Heather Larkin is an assistant professor in the school of social welfare at the State University of New York in Albany. She has done research on the impact that childhood neglect and abuse has had on homeless people in Albany and Petaluma, Calif.

Faithful America is an interfaith advocacy project of the National Council of Churches that is based in Washington, D.C. Contact through the website.

Christopher Jencks is the Malcolm Wiener Professor of Social Policy in the Kennedy School of Government at Harvard University. He is the author of The Homeless and has written about poverty, welfare reform and changes in American family structure.

The New Hampshire Coalition to End Homelessness, a nonprofit organization with headquarters in Manchester, New Hampshire, was founded in 1990. It organizes leaders in the state to research solutions on ending homelessness, educate providers on best practices and empower people to advocate on behalf of the homeless.

David A. Snow is a professor of sociology at the University of California, Irvine. He has studied and written widely on homelessness and poverty.

The National Center on Family Homelessness, based in Washington, D.C., as a part of American Institutes for Research, is dedicated to helping homeless families. Its website includes resources for media members interested in homelessness. Contact Barbara Broman.