Ueda, Vanda. “Modernization and Telephony Diffusion in the Cities of Porto Alegre and Pelotas (1882-1908)”. Estudos Ibero-Americanos 27, no. 1 (December 31, 2001): 159–172. Accessed July 17, 2024. https://revistaseletronicas.pucrs.br/ojs/index.php/iberoamericana/article/view/24516.