I do not have a telephone book for Jaroslaw. In Rzeszow, ther are not an Krzus, but there are 3 Krzos, Anna, Boguslawa and Ryszard. I could not find any Krutak's, Siecka's or Zyrek's. I did find 2 Sieczka's a Genowefa and Maria and 2 Sieczek's, a Dorota and Stanislaw.
I hope this helps! If any of these interest you let me know which ones I can give you the telephone numbers.
I know of a researcher in this area if you are interested. He lives about 80 K from Rzeszow.