Let me say about very useful documents that operats contain – so called field sketches. (Operats are documents accompanying cadastral maps)
Field sketches has got names of land owners written in the sketch and also house numbers. I had a case this year with the town Raczkowa where field sketches allowed me to locate ancestral house. Raczkowa operats did not have alphabetical house and land owners that allow you to locate the house. Alphabetical house and land owners have got building plot numbers that are written in cadastral map. Lots of people believe the cadastral maps have got house numbers and this is not true. They have only building plot numbers where the house was located.
