Today's Photos of 20th Century Big Apple Homes and Buildings

I like to see where my ancestors lived in New York City back in the day, and what their homes and neighborhoods look like today.I've used the New York City tax photos from 1939-1941 to see older views of these buildings. Often I use Google to see the map locations and today's "street views" but now I have a different tool I can use.Above, a search I conducted on NYCityMap (click here to get started yourself) for my great-grandma Tillie Jacobs Mahler's address in the 1950 US Census. She was in her 90s and living in an apartment with her grown daughter Dora Mahler, who had a chronic heart condition. (Dora was incorrectly listed as "Dorothy" in the 1950 Census.)At top right you can see I typed in the street address "1933 Marmion Avenue, Bronx." Up popped the correct address and zip code. When I clicked on the address, the map appeared, highlighting this apartment building in a gold rectangle.Also the column at right of map gave me details such as how many floors (5) and how many…