NYPL Digital Gallery  is so honorable! I hope that I can get more information about the project’s management, such as how did the ID assign for every images.

That is to say, I want to know more about the question below:

How were these digital images processed and made accessible? (http://digitalgallery.nypl.org/nypldigital/dgabout_faq.cfm)

But the answer in the webpage is very brief. Pity!