He was a prolific writer: he published more than two hundred titles, which included monographic works in article or book form and various collaborations with the press or collective editorial initiatives: for the local press, in the Progresso da Feira [Progress of Feira] and the O Concelho de Estarreja [The Municipality of Estarreja], and for the diocesan press of Porto in Voz do Pastor [Voice of the Shepherd] from the late 1910s until the first years of the following decade, including his extensive, hard to quantify contribution to the Grande Enciclopédia Portuguesa e Brasileira [Great Portuguese and Brazilian Encyclopedia]. In the early 1930s, together with Lopes da Cruz and Raúl Machado, he began publishing the Anuário Católico de Portugal [Catholic Yearbook of Portugal] (which is still published today in a different format).

He was 24 years old when, in 1921, he began his historiographical publications on the pages of O Concelho de Estarreja with Válega– Memória histórica e descritiva [Válega- Historical and descriptive memory], which was published as a standalone volume in 1981. He returned to local studies more than a decade later, resuming his historiographical publications: first with A Vila de Ovar– Subsídios para a sua história até ao século XVI [The Village of Ovar: Subsidies for its history up to the 16th century] and Privilégios do Barqueiro de Esgueira (1935) [Privileges of the Boatman of Esgueira], and the following year with Inquirições de D. Afonso II na Terra de Santa Maria [Enquiries of King Afonso III in the Land of Santa Maria] and Passais da igreja de Salreu no ano de 1076 [Parish lands of the Salreu church in 1076] and, in 1937, S. João de Ver nos documentos do «Livro Preto» da Sé de Coimbra [St. João de Ver in the documents of the "Black Book" of the Cathedral of Coimbra], all of them published in the bulletin of the Arquivo Distrital de Aveiro [Aveiro District Archive]. His collaboration with the same publication continued over the next few years, a period during which he published the summarised works that made his historiographical work stand out.

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