This historical document translated in English by Gabriel Roman provides a detailed account of the construction and operation of the first railway lines in Transylvania, focusing primarily on the main line from Arad to Alba Iulia and the secondary line connecting Simeria to Petroșani. It discusses the financial and political factors influencing the railway's development, including initial challenges and the eventual nationalization by the Hungarian State Railways (MÁV). The text also describes the technical aspects of the construction, such as bridge building and track laying, and highlights the architectural style of the railway buildings and stations, particularly the Romantic influences evident in the early structures. Furthermore, the document briefly mentions the construction of the Simeria-Hunedoara line, detailing its purpose in connecting mines and steelworks and its integration into the railway network. Full historical writing here: https://www.arad.zone/blog-ar/prima-cale-ferat%C4%82-din-transilvania-linia-principal%C4%82-arad-alba-iulia-%C8%98i-linia-secundar%C4%82-simeria-petro%C8%98ani