Holy Trinity Church of Cambridge, MA, will present a lecture by John Bridgeland, executive chairman at the Office of American Possibilities, on Thursday, Apr. 27, at 7 p.m., at the church facility (145 Brattle St., Cambridge). Mr. Bridgeland, a former public servant in the administrations of Presidents George W. Bush and Barak Obama, is speaking as part of the Dr. Michael and Joyce Kolligian Distinguished Speaker Series. Click the following links to read more on the parish website, and to view a flyer.