California Passenger List - July 1950
British Commonwealth Pacific Airlines, Ltd.
Embarkation - Vancouver B.C.; Disembarkation: San Francisco
Christiana Simpson, 1880 Jackson, San Francisco, Cal. Age 56, Naturalized American. "Pers. wt": 95. (Looking at entries for other passengers, that could have been her weight. There is a column for "Bag wt.", so it wasn't the weight of luggage.)
1940 San Francisco Census
Christina was living at 1880 Jackson Street
1969-70 San Francisco City Directory
Christina Simpson, Retd H 1790 Jackson Street, Apt 503
She is also in the 1964 directory (also retired, I believe), but she isn't shown in the 1962 directory. Those were the only ones I looked through.
http://www.sfgenealogy.com/sf/sfdatadir.htm Once you view the listing of directories, you can search them by clicking on "IA".
...And thanks for the links to the 1930 and 1940 censuses - the immigration date of 1920 ties in, so it does look as though she continued her rather sad life as a servant, in Seattle then San Francisco...
I lived in San Francisco for a number of years. "That part" of Jackson Street was in a beautiful, somewhat upscale (or even more than somewhat!) neighbourhood in San Francisco (I believe it still is quite a lovely neighbourhood).
Since she is shown as retired and still living on Jackson Street in the 70's, I wonder if she was able to save money during her working years and had a comfortable life in her later years? Or, possibly she shared her living quarters with someone else? At any rate, there is the possibility that she had a good life as she grew older.