Thanks, Silvia! Wow! A telephone directory!
I would be forever in your debt, if you had such a directory. However, I know that there are presently 5 DIFFERENT Matejko families presently living there (and NONE of them are related!!), and it will be difficult to establish written communications with only a telephone book (I don't speak or read Ulrainian).
Is it possible that you can scan (or photocopy) the pages for Potocysce? I expect that it would only be 2 or 3 pages (I was told by a former resident that there are (now) only about 500 people that live there.
How can I help you, Sylvia?