S.P.M.D.T.U. in Literature and Media
The S.P.M.D.T.U. has been profiled in various ways. Below is a collection of literature and websites that highlight the history or the works of the S.P.M.D.T.U.
La Historia de la Sociedad Protección de Trabajadores Unidos. Language: Spanish. Imprint: New York, Comet Press Books, 1958.
Available on Amazon.
The Colorado History Museum also provides a comprehensive collection of works that reference our Sociedad. See more here.