There is a particular database system used by newspapers that encodes the date in base64 in a query parameter. You could search and find the dates, but you nee

There is a particular database system used by newspapers that encodes the date in base64 in a query parameter. You could search and find the dates, but you needed a subscription to access the links. It was setup so if you had the link you could link others to it free of charge. Well, the guy at the local library with subscription started to get irritated with me after the third or fourth link so I built my own search engine to use their search engine. I was a research assistant at the time.