I am after my father, Mikolai Kremko’s birth certificate and further details of his parents and my grandparents. He was born to Leon Kremko and Barbara Walczyk in 1915. His immigration papers say that he came from Nowe Miasto, Poland. He was born during the period when Russia changed the borders and included West Poland as Belarus. I have tried the archives in Minsk however they do not hold such documentation for that early period. Please advise where these docuements may be held.