@blag not sure they have what you're looking for, but there are some archives you can check https://ipce.culturaydeporte.gob.es/documentacion/fototeca.html https://bvpb.mcu.es/fototeca/es/consulta/busqueda.do https://bnedigital.bne.es/bd/es/results?y=s&o=&w=&f=texto_ficha&g=ws&t=date-asc&f1=1901-2000%E2%96%B81941-1950&f1=1901-2000%E2%96%B81951-1960&f4=Dibujos%2C+grabados+y+fotograf%C3%ADas%E2%96%B8Fotograf%C3%ADas&f5=1 (sorry if these are too obvious, nothing else comes to mind rn)