The Slovak phone site is at www.zoznamst.sk
The name MULIK, NOVOTNY, PLAC'KO and DUCH list in the phone book.

Have you a name of a town that your family members came from?
Have you looked in the Ellis Island website for their manifests?

http://mapy.atlas.sk for location of a town
www.hosmanek.com/slovak
www.village.sk
www.our-slovakia.com
www.iarelative.com
www.slovakfolkcrafts.com