That's all fine and good, but I was unable to determine if there was a listing indicating what newspaper the items were from. The one shown in the illustration here has a code of "SD." Others had different codes and, in my quick survey of the site, I could not find a listing of the abbreviations.
The description, shown below, was not helpful:
About New York Marriage Notices, 1800-55
Frankly that description sounds like boilerplate text to me and could apply to a variety of items.
Hopefully someone will indicate that I've overlooked the list of abbreviations. It would have been nice for them to have been included and I'm hoping they are buried on the Ancestry.com site and I simply have not found them. Having the abbreviations in the description would have been helpful.