Because of your help, I was able to deduce the same thing. Then I searched the Anna C Anderson's born in 1899 in Dec and got two. The one you mentioned and one on Dec 4. After searching for an Anna born in Brooklyn on 30 Dec 1899, I got her death date and husband's name. According to a 1940 census, they had one child named Doris Short in 1932. So I am know trying to find her.
But you really taught me two valuable lessons and I have to thank you. 1) Look at the census date and take all the names a person used in all the census records.
Thank you so so much!