machinery of Wall street why it exists, how it works and what it accomplishes This book, "The machinery of Wall street why it exists, how it works and what it accomplishes. no. 21", by G.C. Selden, is a replication of a book originally published before 1917. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.