The official newspaper of the Portuguese State, especially during the Constitutional Monarchy (1820-1910), constitutes a basic source for the knowledge of the History of Contemporary Portugal. The official newspaper than published the bulletins of the Royal Court; laws, decrees, regulations and other Royal and Governmental acts; statistical documents; transcripts of the minutes of parliamentary sessions; share prices; customs movement and maritime service bulletins; national and international news; advertisements for goods and services; in short, an important set of official and unofficial information covering multiple sectors of the Portuguese economy, population and society.
The website DIGIGOV – Diário do Governo Digital (1820-1910) features close to 30.000 issues of the Portuguese official newspaper (including supplements, appendices and extraordinary editions) published from September 16, 1820, the date of the first edition of the Diário do Governo, inaugurating a new stage in the life of the official newspaper of the Portuguese State, following the Liberal Revolution of August 24, and October 5, 1910, when the final issue of the official newspaper with the arms of the Monarchy was printed, due to establishment of the Republic in Portugal.