Martin H. Blatt & David R. Roediger 
The Meaning of Slavery in the North [PDF ebook] 

Southern cotton planters and Northern textile mill owners maintained what has been called ‘an unholy alliance between the lords of the lash and the lords of the loom.’ This collection of essays focuses on the central role of slavery in the early development of industrialization in the United States as well as on the interconnections among the histories of African Americans, women, and labor.