Skip,
The wonderful thing about images on Shorpy is they generally come from the Library of Congress. The images used on Shorpy often start as a much higher resolution image, scaled down and cleaned up a bit for general consumption by the Average Joe who might not be as interested in these images as we tend to be. If someone were motivated enough, you could locate the full resolution image on the Library of Congress and likely make out the text on these cars. I did a brief search and found nothing, but I can't say I put my all into it.
There have been a large number of Jackson images appearing on Shorpy lately, I suspect that LOC has gotten around to doing high resolution scans of these. If we're lucky we'll see more images of interest in the future!
Andrew Brandon
A fixture here since Y2k.
[
www.pacificng.com]
[
www.spnghs.org]
"An end to red domes in our lifetime!"