How about the Hero John Brown: letter about Brown from Frank Sanborn
He is as ready for a revolution as any other man, and is now on the border of Kansa, safe from arrest, but prepared for action, but he needs money for his present expenses, and active support. I believe he is the best disunion champion you can find and with his hundred men, when he is put where he can use them will do more to split the Union than a list of 50,000 names for your convention--good as that is. The Secret Six by Otto Scott.
The NE Abolitionist were just as disunionist as any Southerner.