Brian try http://www.bolerium.com or http://powells.com or Recollection Books in NYC, for the Guerin. Guerin also wrote an autobiographical book, "The Brown Plague."
Robert Brady, is sadly not cited much anymore. I bacame aware of him in high school when, one of the books that radicalized me, "The Twisted Dream: Capitalist Development in the US, " by Doug Dowd, cited him a bit. Michael Pugliese