Denver. Downtown area Proposal for a downtown Denver Historic District deferred: until 1 year study made. Post N 28, 1979 p.34 RMN N 28, 1979 p.68 Urban designer, John Prosser, recomends additional housing and open space. RMN N 28, 1979 p.101 Colo. State Historical Society proposes more than 30 blocks in downtown Denver be made national historic districts. R44N N 18, 1979 p.10 Downtown skyscraper boom to continue in 1980x--overview. Post D 30, 1979 p.29 is