A newspaper from 1963 that said John F. Kennedy had died could be worth between $100 and $400. The value depends on who made the newspaper and how good it is.
For example, as of 2014, a good copy of The Dallas Times Herald from the day Kennedy died could sell for anywhere between $260 and $355. But a local paper like The Michigan Daily Extra, The Boston Globe Extra, The Miami News, or The Seattle Post-Intelligencer may be worth $50 to $185. When more copies of a paper were printed, it may be less rare, which makes it less valuable to collectors.