Some farms does not logically imply that Greenland was substantially ice free. Some of the Greenland ice sheets are 3km thick and have been there for hundreds of thousands of years.

And newspaper articles from 49 years ago need to be put in context with current science.

You have your mind made up and are desperately grasping for anything to confirm your bias.

Why is your mind made up?

You never change things by fighting the existing reality.
To change something, build a new model that makes the old model obsolete.
R. Buckminster Fuller