The sub-series contains files relating the lectures, workshops, and seminars produced by the Brownstone Revival Comittee (later the Brownstone Revival Coalition), dating from 1970 to 2004. It includes correspondence, flyers, programs, lecture notes, slide lists, and photographs.
Additional lectures delivered by EHO, some of which may have been produced by the Brownstone Revival Committee, can be found in Sub-series 3.1: Personal papers, memorabilia, and photographs, Sub-series 3.3: Publicity, and Series 5: Brooklyn and Historic Preservation lectures. Slides were used by EHO in his lectures can be found in Sub-series 4.3: Brooklyn and Historic Preservation slides.