Google has done us all the remarkable favor of capturing images of cities and towns across America and making those images accessible for free in the Streetview of Google Maps. Across New York, we have contemporary street-level views which we can compare with our historic photos in New York Heritage. Sometimes this is a challenge, since after only a few decades, buildings are torn down, renovated, or otherwise changed. When we're successful, though, we get to see the development of 20th century New York played across a few snapshots.
Well that proves the point- Ice cream can survive anything!