The referenced buildings are long gone, replaced the wedding cake like Old Executive Office building, but across the street still stands the Winder Building which also housed offices of the War Department in this period and afterwards. Two great books about the telegraph in this period are Tom Wheeler's "Mr Lincoln's T-Mails" and Tom Standage's "The Victorian Internet"
This is perfect! Lincoln never lost touch with the common man.
The referenced buildings are long gone, replaced the wedding cake like Old Executive Office building, but across the street still stands the Winder Building which also housed offices of the War Department in this period and afterwards. Two great books about the telegraph in this period are Tom Wheeler's "Mr Lincoln's T-Mails" and Tom Standage's "The Victorian Internet"