Thank you!!! I’m not 100% sure but I THINK that they were shot in colour! The photographer is Carl Mydans and he was taking them for LIFE Magazine and while colour photography wasn’t exactly cheap then (it was beginning to get cheaper by the mid 50′s), he was working for a company which could spare the change!

Carl and his wife, Shelley, were LIFE’s first husband and wife team. In 1942, documenting the second world war from the Philippines, they were captured by invading Japanese and held prisoner for two years; first in Manila and then Shanghai. After their release they went on to photograph the war in Italy and France, before returning to the Philippines, where some of Carl’s most famous pictures were taken (Shelley, being a woman, was denied access to a number of shoots). Ironically, after the war Carl headed LIFE’s Tokyo bureau for a number of years. Shelley lived until 2002 and Carl until 2004 (they were 87 and 97 respectively).

Edit: The answer is yes! I found a source for another one of his fog pictures and it says it’s taken from a colour transparency!