Executive Order 8802 (image and transcript).
archives.gov/milestone-documents/executive-order-8802
A. Phillip Randolph’s recollection of President Franklin Delano Roosevelt discussing the 1941 march.
FDR: Phil Randolph, we can’t have 100,000 Negroes marching on Washington. If anything such as that were to occur, you wouldn’t be able to manage them. We might have bloodshed and death.
FDR: Let us get down to business here and find out what can be done.
Bonus
Randolph, Rustin, & The Origins of the March on Washington: Crash Course Black American History #32 (13 min).
youtube.com/watch?v=vDNkw13NAA0