One may conclude that poetic conventions were being challenged by the 1850's from:
Asales data of music publishers from 1820 to 1860.
Bsales data of American publishers from 1820 to 1860.
Cattending a dedication ceremony of a public monument in the 1850's.
Dattending symphonic concerts in the 1850's.
Ean analysis of "Out of the Cradle Endlessly Rocking."
Asales data of music publishers from 1820 to 1860.
Bsales data of American publishers from 1820 to 1860.
Cattending a dedication ceremony of a public monument in the 1850's.
Dattending symphonic concerts in the 1850's.
Ean analysis of "Out of the Cradle Endlessly Rocking."