Good morning,

Thanks for the links, interesting work. How did he make panchromatic glass plates in 1909 ?? That's the question.

In one photo there is no color fringing:
http://www.loc.gov/exhibits/empire/images/p87-7001.jpg

In others there is
http://www.loc.gov/exhibits/empire/images/p87-6500.jpg http://www.loc.gov/exhibits/empire/i...45__00547_.jpg

So I guess he used a sequence camera and luck. Is there any info on the camera construction available?

Thanks.