I am looking for Henryk Lis, he is my mothers 2nd cousin, my Aunt Dorothy wrote to him in the mid 70s, I have 3 addresses.
Anyone with any information any help or suggestions would sure be appreciated I have no information on the Lis family other than my great grandmothers maiden name was Lis.
First Address:

Henryk Lis
Olsztyn
Ul. Mickiewicza Fm14
Poland

Then:
NAD., Henryk Lis
Oleztyn
ul. Mickiewicza 7/14
Poland

Last address given:
2.H. Lis
10-900 Szymanolokiego 15/5
10-278 Olszlyn
Poland
Thanks a bunch.
Jenna Longstreet