VGFacts

Here's a link to an article.
http://earthboundcentral.com/2009/09/ear...type-info/

Here's a video.

Hands On: EarthBound (NES) Prototype [Part 1/2]
https://www.youtube.com/watch?v=HOqnD5WyQ5c

Hands On: EarthBound (NES) Prototype [Part 2/2]
https://www.youtube.com/watch?v=6j8NWSrNTJ4

On June 14, 2015. During Nintendo World Championships 2015. Nintendo announced Mother (EarthBound Zero) was coming to North America on Wii U Virtual Console title "EarthBound Beginnings" and its now available.

https://www.youtube.com/watch?v=ttKkiEKqwuk