Historical parliamentary debates offer a window into the past and provide valuable insights for academic research and historical analysis. This paper presents a novel web application tailored to the exploration of historical parliamentary corpora in the context of Slovenian national identity. The developed web viewer enables advanced search functions within collections of historical parliamentary records and has an intuitive and user-friendly interface. Users can enter search terms and apply filters to refine their search results. The search function allows keyword and phrase searching, including the ability to search by delegate and place names. It is also possible to search for translations of the text by selecting the desired languages. The search results are displayed with a preview of the proceedings and highlighted phrases that match the search query. To review a specific record, the full PDF document can be displayed in a separate view, allowing the user to scroll through the PDF document and search the content. In addition, the two corpora of Slovenian historical records integrated into the viewer—the Carniolan Provincial Assembly Corpus and the Parliamentary Corpus of the First Yugoslavia—are described and an insight into the corresponding preparation processes is provided.