There are plenty of ways you can help us! Word of mouth always goes a long way :) tell your friends, coworkers, anyone who could be of help.
If you want to put in a bit more effort for the search, here is what you can do! If you were there in the 90s during the original airings, go ahead and search to see if you have anything recorded. Hell, even if you didnt record it directly, if you have any home videos or anything where it is playing in the background, that also helps!
If you are a bit younger, you could always ask your parents, a teacher, or an older relative or friend that may have it somewhere.
Finally, web searching! Just like anything, there are most likely recordings or images of these early seasons online. Dive through the depths of the internet, anywhere you think might have something!
Now, if you have any other ideas for a way you want to search, go ahead! These are just tips, but anything you can find will mean the world to Simpsons enthusiasts all over the world.