Here's the Google map of the area:
mapofpoland.pl/Iwaniska,mapa.html
Can't find Siedleczysko there - it might be a local name for some part of the town - but you can see Iwaniska and Zaldów. It's Opatów county, Swiętokrzyskie province, south of Poland. There's a link to some pictures of Iwaniska under the map, also there is the official town site:
iwaniska.eu/index.php?option=com_frontpage&Itemid=1
And this is the location on the map of Poland: en.wikipedia.org/wiki/Iwaniska
W. Wolynskiepowiat Kostopol
It's Ukraine now: en.wikipedia.org/wiki/Kostopil
p.ta Bystrzyca
This one is tougher. Is it part of the above address? If not, there are other possibilities: en.wikipedia.org/wiki/Bystrzyca