Like Andy says, traditional lugged frames are very forgiving. I'd look further at the same place on the down tube. Very good chance you'll see a bulge underneath. Bigger concern is what the fork saw. I'd look long and hard at the front and rear of the fork blades just under the fork crown. Also the crown itself. And I'd sight down the headtube and do my best to judge whether the fork blades were in line. (The fork could well have been straightened. Not the end of the world, but figure 6 to 8 lives are gone.

I put my Mooney through a rude crash early on when I dropped the front wheel into a crack. No visible damage I could find. I was across the country from the builder so I just kept on riding. A couple of years later, I crashed a lot harder and bent both fork blades; one a lot. I had a local framebuilder straighten the fork and put in an order for a new one. That was 1983. Fork went on a year later. Bike is still going strong 35,000 miles later. I have long suspected the wheelbase might be a tad shorter than when built but it rides beautifully so I just don't sweat it.

Ben