From a quick search:
- https://snescentral.com/article.php?id=1019
- The Gateway System was featured in an article in Nintendo Power V57 in 1994.
- https://tedium.co/2017/02/23/in-flight-entertainment-system-history/
- In action: https://www.youtube.com/watch?v=JOy76Ntqxgs
- Controller: https://www.ebay.com/itm/LodgeNet-Hotel-Room-Controller-Nintendo-Gateway-System-SNES-Collector-/254227070228
- https://www.lawinsider.com/clause/nintendo-gateway-system
- From Nintendo video game consoles#Other hardware (needs a wikilink): "Gateway System Gets Shanghaied". GamePro (56). IDG. March 1994. p. 186.
- More in action: https://twitter.com/nintendomemo/status/977582610355490816