Here is some more information about the 1950 census and how the enumerators were instructed to use a map.
Did you have an ancestor participate in the 1950 census? Here are a few names who attended instructor classes.
Differences between 1940 and 1950 census:
Between now and April 1, 2022, we will try to post a link from NARA with information about the 1950 census. It is just a tidbit but there are other links you can use to get more information.