Blum, H. (1963). The enduring impact of Lincoln's Gettysburg address: Did an appalling disease make Lincoln great? The paradox of his rise to the Presidency. Is there a sixth copy of the Gettysburg address? [Philadelphia.

Blum, Herman. The Enduring Impact of Lincoln's Gettysburg Address: Did an Appalling Disease Make Lincoln Great? The Paradox of His Rise to the Presidency. Is There a Sixth Copy of the Gettysburg Address? [Philadelphia, 1963.

Blum, Herman. The Enduring Impact of Lincoln's Gettysburg Address: Did an Appalling Disease Make Lincoln Great? The Paradox of His Rise to the Presidency. Is There a Sixth Copy of the Gettysburg Address? [Philadelphia, 1963.