The only census records I have seen that include names etc begin 1921 but are in the form of Foglio di famiglia. I don't even know if it exists for Cassino. I doubt it since the war destroyed pretty much all civil records and many parish records in that area. The one I have seen the most is 1936 but it is stamped on their personal record card. I have never seen in this part of Italy a census of the type found in UK and USA.