Oldenburg Stadt Adress Buecher

Hello to all,

I have been going through the 1900, 1949 and 1955 Oldenburg Adressbuecher's and have noticed that most of my female relatives that were mentioned in 1949, are not mentioned in 1955. Did they decide to just list the head of the household in 1955? There seem to be husbands listed but not wives.

Tania Taylor