That's amazing. What a find.
Why were Internal passport issuance books required?
Am I right in assuming that this is internal to Poland or would it be mainland Europe?
My maternal family came from Lwow, Poland between the wars. They travelled to capital cities for holidays. May I ask would they have required some sort of passport and if so is there anywhere that I might search for them?
Noreen (nee Thorne)
Szczepanski & Mrozowska