Marybeth Whalen, along with her husband Curt, wrote the 2009 book Learning to Live Financially Free, based on their own financial mistakes. Contact the Charlotte, N.C., couple through publicist Leslie Paladino at their Grand Rapids, Mich., publisher, Kregel Publishing.

David Mustard is an associate professor of economics at the University of Georgia in Athens, and his economic research is frequently cited in the media. He serves on the executive board of the Association of Christian Economists.

Kenneth Elzinga is Robert C. Taylor Professor of Economics at the University of Virginia. His past research interests include religion and economics.

Gregory Krohn teaches religion and economics at Bucknell University in Lewisburg, Pa.

Robert Black teaches economics at Houghton College in Houghton, N.Y. He has written about Christian principles in economics.

The Greater Boston Interfaith Organization is a collection of multiple congregations and faith leaders working to overcome divisions of race and social class in Boston. Contact Larry Gordon, the lead organizer.

Bruce Webb teaches macroeconomics and Christian teaching on economics and the economy at Gordon College in Wenham, Mass.

Ibrahim Warde teaches Islamic banking and finance at Tufts University in Boston.