[1] The newspaper, printed initially in a San Telmo neighborhood boarding house, became a gathering point for socialists active in Argentina in the late nineteenth century.

The Socialist Party grew significantly in Buenos Aires and Mar del Plata following the 1912 enactment of the Sáenz Peña Law guaranteeing a secret ballot and universal (male) suffrage.

[3] Ghioldi and Bravo led the publication during Argentina's "Infamous Decade," when the right-wing Concordance regime that took power in fraudulent elections held in 1931 perpetuated itself by the same tactics.

Led by Luis Pan, its editors opened a clandestine press in Ranelagh, a southern suburb of Buenos Aires, and though this facility was later discovered by police, La Vanguardia continued to appear as a weekly newspaper.

[1] Much of the Socialist Party's leadership, as well as its journal's staff, would be imprisoned during Perón's successful 1951 re-election campaign, and only the willingness of El Sol editor-in-chief Emilio Frugoni to include La Vanguardia as a last-page supplement kept the periodical in publication.

The following year, however, its remaining staff created an international edition of La Vanguardia printed in Montevideo, Uruguay, on Bible paper to facilitate its distribution abroad.

[1] A Peronist riot on April 15, 1953, triggered by bombs detonated at the Plaza de Mayo during a mass gathering resulted in the destruction of the Casa del Pueblo.