If modernist architecture ended up even flatter and blanker in America than its European originators intended, it might be because it was introduced to this country by black-and-white (and sometimes blurry) photographs. That’s the thesis of Joseph Rosa’s lecture, “Architectural Photography and the Construction of Modern Architecture.” The National Building Museum’s chief curator and the author of A Constructed View: The Architectural Photography of Julius Shulman, Rosa argues that American architectural photos were “encoded with an ideology that was rarely achieved spatially.” At 6:30 p.m. at the National Building Museum, 401 F St. NW. $6. For reservations call (202) 272-2448. (Mark Jenkins)