Yup! O'scale is the only way to go for old scratch-builders. I just looked at the 1957 magazine article upon which this building is based and he used masonry lintels and sills which would be a lot easier to craft. I may switch to that. Also, my friend and I re-shot Bernheim for the article today using photo-floods to get more light on the front and I'm pleased with the results. It's up to the editor to decide if we're there yet. I've sent all the files and the ball's in his court (a Wimbledon reference). The magazine will crop it and drop out the blue background replacing it with a real sky image. The focus is much better than shown on this GIF version. All the pictures are transmitted as Nikon RAW and are 20mb each. The lighting and color are pretty accurate.
I'll post later today when I have more Night Hawks work done.