An old family postcard sent to Miss E.Forster

I have found a torn photograph in a family album which has a postcard on the
reverse.

It is sent c/o a Dr. Cook to a Miss E. Forster possibly by a great niece
Lillian.

I have tried to search for the address, Dr Cook and Miss E Forster in the
1901 census without success.

The image address reads

(Postmark) Henley-in-Arden 1908 (stamp is Edward VII), 6.45 pm possibly 16
January (JA16).

Miss E Forster

c/o Dr Cook

Armfield P...

R.S. 6

Co Durh...

I am told that what looks like Armfield P is Annfield Plain.

I don't know what R.S. 6 is.

Could someone check the 1901 census for me please, as I am sure I must be
doing something wrong not to even find the address?

Jenny M Benson...

Could you be misreading KYO as RS6? Annfield Plain seems to be in or
near Kyo in Durham.

Searching Ancestry's 1901 census with Cook and then Forster as the
surnames and with Annfield as a keyword I couldn't find any Cook who
looked like he might have been a Dr and the only E Forster was a child
of about 6.