"The building of the former Beit Midrasz in Sokołów Podlaski was recovered on December 20, 1999, and sold on November 20, 2000. At the time of its restitution it was in very poor technical condition. It had been totally rebuilt – with the upper floor adapted for apartment space and the ground floor partially for services (shops) (...)"
A very interesting film by Marian Marzynski about survivors coming back to Poland. There is nothing about Sokolow but I'm sure you will recognise the emotions of those people.
"We are together 2013". Polish and Israeli youth in Treblinka. Before the ceremony they had a chance to meet and spend some time together in Kosów Lacki and Małkinia. The article about it (in Polish): http://www.jewish.org.pl/index.php/pl/wiadomopci-mainmenu-57/5671-jestemy-razem.html