A panel discussion featuring Tom Sheridan, Border Citizens author Eric Meeks, A Safeway in Arizona author Tom Zoellner, and the founder of the Center for the Future of Arizona, Lattie Coor, focuses on the topic of Sheridan's new book, Arizona: A History, Revised Edition, at 6:30 p.m., Tuesday, Feb. 7. Visit zocalopublicsquare.org for more information.