Other works followed such as the translation from French of Jean Ferdinand Denis’ work Portugal (1850), or, to give another example, Cesare Balbo’s book, Studii sulla guerra di indipendenza di Spagna e Portogallo, written in 1847 (a work that comes close to what could be considered military history). Bertolotti’s work was the result of a tireless desire to spread knowledge with one of his objectives being to encourage the reader’s interest in history and geography. Despite being weakly structured from the historiographical and methodological point of view, his idea of history reveals an interest in multiple areas of knowledge (history, geography and literature). In every case though, a bibliographical synthesis prevails over the rigorous analysis of sources and, despite writing in clear language devoid of the Baroque flourishes that were so prolific in romantic writing, his work is contaminated by the historical novel with an excess of rhetoric that was not uncommon in 19th century informational works.

In his historiographical activity, Bertolotti enjoyed a particularly prolific period around the time of his return to Turin where he obtained the favour and protection of the Royal House of Savoy (in particular King Charles Albert), to which he had already dedicated a historical study, Istoria della Real Casa di Savoja (1830). According to some critics, the merit of this study was that it popularized a topic that was still little known and researched although in a tone that was deemed too flattering and aggrandizing. Another historical work, Gli Arabi in Italia Esercitazione istorica, followed in 1838. This was a critical history of the Moorish domination of the islands and the south of the peninsula and of the damage that, in the author’s opinion, this had caused. In 1857, in collaboration with another writer who dedicated himself to producing works of an informative nature - Cesare Cantù, author of a world history translated into several languages – he published Il regno Lombardo-veneto and Gli stati sardi. The significance of the former work cannot be underrated as it appeared right at the time when the political and diplomatic strategy of the Kingdom of Sardinia (under the able leadership of the Count of Cavour) was based on a plan to annex the Kingdom of Lombardy-Venetia (an annexation carried out two years later) as a first step to their territorial expansion in the peninsula.

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