The following images are from the USC digital archive.
above: Old Chinatown, the proposed Union Station site looking northeast from City Hall 1931.
This is such a great photo.
above: Union Station site in 1934.
The Los Angeles County Hospital is in the far distance.
above: Union Station site overlay 1934
above: Another angle with overlay 1934.
above: Union Station site in 1933.
This is looking west I believe.
above: Looking west, two years later in 1935.
It's great to compare the two.
above: Union Station site overlay 1935
above: Union Station site in 1936
More to come..........