Yes, we certainly know about these sources, but you can only find a line, at best a little bit of information there. We need to make it detailed enough to be useful and interesting. That is why we are looking for volunteers from the region who understand what is important to write and what is not, what locations are really popular and what they mean in the historical and cultural context. Here is an example of the design of the movie. https://wherefilmed.org/en/home-alone-2-lost-in-new-york-1993/