This one is driving me crazy (thanks, e_r!).....I am willing to accept HenryHuntington's solution, it certainly looks like the cross street sign is Harvard....and odinthor's find of a reference to Sir George's located at 27th & Wilshire seems conclusive (although 27th does not cross Wilshire, 27th is Princeton St. at that point)....but I think we are looking the wrong way...if you go a few blocks west, to 25th and Wilshire, and face west, on the south side of Wilshire this appears....
....so we have a 1960-ish mid-rise office building, no windows on the side, partially obscuring another similar vintage office building....(by the way, the Surfer Rose building was, for many years, The Round Table Restaurant....after that there is a common driveway, for decades it was shared with Knoll's Black Forest Inn, owned and operated by the always-gracious Norbert and Hildegard Knoll)...
Note Douglas Park across the street, after the park there is a red building, that's a Jack-In-The Box, although without the tall pole sign, we see a Jack in e_r's photo at the same spot....off in the distance in the '68 photo is a Von's sign, there was then, and there is now, a Von's at Wilshire and 13th.
If we pull back a block east to 26th St. we get this....
On the right can see a sliver of a gas station, for as long as I can remember that has been a 76 station, but previous to that it was a Standard Oil station, and there's a Standard sign in the original post....this from a '50's directory...
So we see a Standard station, a stretch of greenery, a Jack-In-The-Box on the right (north) side of the street in all images, and a distant Von's....
Now, to see all this from Wilshire/Harvard seems a stretch, the Von's sign is 15 blocks away, that's 3/4 of a mile....
P.S.....after composing the above I kept working this thing, finally found confirmation that we are indeed at Wilshire/Harvard, but facing west....
...the office building has an address of 2730 Wilshire, 2736 does not exist anymore...but it did in 1955....
Sir George's Smorgasbord was at the other end of the 2700 block, in the building that for many years housed the Santa Monica location of the Pacific Dining Car.....
The elevated perspective of the photographer, the distance compression due to the focus, the lack of trees allowing a view of the storefronts, and a generally clear day all combined to play serious tricks on the eye.