In addition to the founders, the editors of Volume IV of the RPH (with two volumes published in 1949 and 1951 respectively) included Professors Guilherme Braga da Cruz, Miranda Barbosa and Sílvio Lima. As this is a volume dedicated to Gama Barros, it had a wide range of historians working on it. They joined in honouring the author of História da Administração Pública em Portugal na Idade Média [History of Public Administration in Portugal in the Middle Ages] prominent foreign medievalists (Sanchez Albornoz, Pierre David, Prieto Bances, Charles Verlinden, Luis Garcia Valdevellano, Yves Renouard, José Maria Lacarra, Joseph Piel, Luis Fernández Suárez, Robert Ricard, José Maria Font Rius, Albin Eduard Beau, José Vives, Antonio de La Torre, Léon Bourdon, Pierre Russel, Fray Justo Pérez de Urbel), and the modernist Harold Livermore. As for Portuguese contributions, the most noteworthy are the extensive articles by Marcelo Caetano on the courts of 1385, by Mário Martins on pilgrimages and books of mediaeval miracles and by Miguel de Oliveira on Portuguese parishes. The work of Gama Barros was analysed by Torquato de Sousa Soares, António Baião, Luís Afonso Ferreira, and Queiroz Veloso. The young historian Virgínia Rau showed the results of her pioneering (for the time) research in the article "The Dutch and the export of salt from Setubal at the end of the 17th century".
Tomes VI (1955) and VII (1957) of the RPH were dedicated to Pierre David, a French medievalist whom the Faculty of Arts and Humanities had welcomed during the Second World War. This tribute also brought together prominent foreign historians who addressed topics in the field of ecclesiastical and religious history, an area in which the honouree specialised (Pierre Meyer, Jean Godel, Louis Bassete, Pierre Vaillant, Demetrio Mansilla, Maur Cocheril, Díaz y Díaz, José Vives, Oscar Halecki, Justo Pérez Urbiel, Jeanne Vielliard, Ambroise Jobert, and the modernist Louís Jadin). The Portuguese participation included articles by Torquato Sousa Soares and the young Avelino de Jesus da Costa, who spoke about the work of Pierre David. José Mattoso collaborated on the study "L'Abbaye de Pendorada des origines à 1160".
This work is financed by national funds through FCT - Foundation for Science and Technology, I.P, in the scope of the projects UIDB/04311/2020 and UIDP/04311/2020.