Pettigrew was born on July 23, 1848. He wrote the book titled, "Triumphant Plutocracy," whose topic was about how the US government has always been corrupted by big corporations. The following links are to information about him, and about which libraries have his book. A Google search will give links to a few of the chapters of his book.
http://www.worldcatlibraries.org/wcpa/top3mset/d36fc694c3d35012.htmlhttp://yamaguchy.netfirms.com/pettigrew/pettig_cage.html