Sandburg's Lincoln scholarship had an enormous impact on the popular view of Lincoln. The books were adapted by Robert E. Sherwood for his Pulitzer Prize-winning play "Abe Lincoln in Illinois" (1938) and David Wolper's six-part dramatization for television, "Sandburg's Lincoln" (1974). He recorded excerpts from the biography and some of Lincoln's speeches for Caedmon Records in New York City in May 1957. He was awarded a Grammy Award in 1959 for Best Performance – Documentary Or Spoken Word (Other Than Comedy) for his recording of Aaron Copland's "Lincoln Portrait" with the New York Philharmonic. Some historians suggest more Americans learned about Lincoln from Sandburg than from any other source.