A group of 21 handwritten, typed and printed documents from northern Mexico, dating to the turn of the century, (the earliest, 1885, the latest, 1905, with most clustered between 1896 and 1901), one of those documents actually signed in ink by Porfirio Diaz, (1830-1915), the Mexican general and politician who for seven terms totaling over 30 years was the president of Mexico. Diaz led troops against the French-imposed rule of Emperor Maximilian, and his success in the 1862-1867 campaign was integral to his ascent to the presidency. His years in office were controversial for a number of reasons, and he was ousted from the country in 1911 during the Mexican Revolution led by Francisco Madero, ultimately dying in exile in Paris in 1915. Diaz is credited with emphasizing infrastructure improvements that modernized the country, including an increase in telegraph lines throughout the nation. This group of documents seems generally to relate to one Guillermo Munoz, early telegrapher of the region---mostly referencing his job duties. Therefore the documents reflect this modernization push, and as such are of significant historical value. The fragile sheet bearing the presidential autograph is torn in half. Nevertheless the group should be of considerable interest to those who appreciate Mexico's complex and turbulent history. The photos do not allow for a complete illustration of the many sheets---more photos happily provided upon request.