More than one poet has tried to capture all of America in a single work.But how would it be if the works of many poets were stitched together into a sampler portrait of America? That's what tonight's program has done, drawing on such writers as Edgar Allan Poe, Ralph Waldo Emerson, e.e.Cummings and Allen Ginsberg. The major work of the evening is Robert Frost's "Death Of The Hired Man," with Peggy Wood as Mary, Alexander Scourby as Silas and James Whitmore, the show's narrator, as Warren. "The People Yes," by Carl Sandburg,is also heard.