Henry in his Shoah testimony (Henry Hurwicz, testimony for the Shoah Foundation) said that number 10 Ulica Graniczna (“Border Street”) where the Hurwicz family (Adek, Zina, Leo, Henry) lived would be just outside the ghetto: “So we knew that somehow they were going to build the ghetto wall right in the center of Graniczna Street. And our house would be outside of the ghetto….” This address accords with my memory. Also, Ari Kolbar wrote me in an email, “As you know, our grandparents lived in Warsaw in Graniczna Street 10 and 11 . . .”
The database at http://www.warszawa.getto.pl says that Graniczna 11 was not in the Warsaw Ghetto.
The map below, from http://static.geozeta.pl/content/docs/atlas.pdf shows Ulica Graniczna in the upper left-hand corner. The light tan color of the buildings (numbered 4, 6, 8 … 12, 14, with 10 missing but implied) indicates that they were entirely destroyed in World War II. The street was destroyed as well. The black outlines show the streets now. When Leo returned to his old neighborhood long after World War II, the only thing he recognized was a tree in a park.
[Map found at https://www.reddit.com/r/europe/comments/842o3d/map_of_the_warsaw_ghetto_19401943/ on 12-23-19.]
“The story of Polish and Jewish families living side by side in one Warsaw street. Everything changes once and for all with the Nazi invasion.” https://www.imdb.com/title/tt0041999/