I just wanted to add another book to the list:

A Mind Shaped by Poverty: Ten Things Educators Should Know
by Reginia Rawlingson

This very short book was incredibly poignant: not only did I grow up amidst poverty, but a number of my students did as well. What are some possible mindsets that poverty can cause? What are the fallacies that a person from an impoverished background can fall into? Rawlingson tries to shed light on the issue by speaking from her own childhood experience, and from the accumulated wisdom of several decades as an educator. It is not a research-based work, at least not there are no footnotes or references to studies, but the narrative rang very true to me.