Re: Help in locating towns/cities/villages in Hungarian region of the Austro-Hungarian Empire and in Eastern Poland/Western Russia or Ukraine
The genealogy site www.GenTeam.eu Gazetteer of Austrian, Czech, Slovak and Slovenian Republic that includes places in Hungary that are now part of Slovakia or Ukraine. The site is free but you need to register.
The Fuzzy Gazetteer at http://isodp.hof-university.de/fuzzyg/query/ is also helpful.
United States Holocaust Memorial Museum