Documents, photographs, witness statements, films and all sources systematically collected by Porta Polonica are digitized and recorded in a database.
Alfred Hartwig
Alfred Hartwig, Zeche Shamrock III / IV, watercolour
Certificate
The certificate of the award of the title of honoray doctor to Jan Łukasiewicz issued on 1st November 1938
The award of the title of honorary doctor
Front row left Heinrich Scholz, centre Jan Łukasiewicz, alongside him his wife Regina Barwińska, behind her Hans Adolf von Moltke. Second row, fourth from the right, Adolf Kratzer
Award
The award of the title of honorary doctor of the University of Münster to Jan Łukasiewicz in the German Embassy in Warsaw on 20th December 1938.
Poster
Announcement of Łukasiewicz’s lecture at the University of Münster
Ryszard Mroziuk
Ryszard Mroziuk, piece of paper
Ryszard Mroziuk
Ryszard Mroziuk, handwritten note
Poster "P" of the Volksbund für das Deutschtum im Ausland
Collection Porta Polonica [from BPK]
Another page
"De revolutionibus orbium coelestium"
First page from the book "De revolutionibus orbium coelestium"
Copernicus Memorial
Frombork Cathedral
Epitaph
St John’s Church, Toruń
View of the “Red Salon” and the winter garden of the building
“Radziwill Palais”
Photo of the building
Photo of the building
Photo from the former permanent exhibition
Kraszewski Museum in Dresden
Portrait of Kraszewski around the year 1879
Portrait of Roman Witold Ingarden by Stanisław Ignacy Witkiewicz (Witkacy)