Interesting image/view. I see JFK initials in the www address. If it’s from the 60’s, some of those trees could have been removed considering it’s 60 years later.
You are right. It seems to be an older image.
Let’s try this:
Schemata of WW from Wikipedia shows press briefing room is in the long part part of the WW:
https://en.wikipedia.org/wiki/West_Wing#/media/File:White_House_West_Wing_-_1st_Floor.png
Aerial view of WH from a photographer’s website:
http://photonshouse.com/aerial-photos-of-the-white-house.html