Prescott Moore Lassman’s End of Pew, from a series about congregants at the All Souls Church. Copyright the artist. Image courtesy of the City Hall Art Collection. In 2006, local artist Sondra N. Arkin was given an enviable but extremely difficult job: acquire the defining volume of works that captured the breadth and scope of D.C. art to display in HeART of DC, the City Hall Art Collection at the John A. Wilson Building….