I watched Naked City (1948) the other night and there's a scene with a milkman delivering from a horse drawn carriage. I wondered, how long did horse-drawn carriages continue to be used in NYC (not including the carriage rides in Central Park)? Which led me to this lovely article.
I submitted it a day or two ago; I guess the HN mods thought it worthy of the second chance pool[1]. Thank you HN mods! :-)