My husband recently bought me the Mickey Mania game for SEGA GENESIS. *Yes, the game from the early 90s* The player plays through several of the original Mickey Mouse cartoons starting at Steamboat Willie.
I have yet to make it through the first full level (I'm really bad at video games unless it's Sonic).
But the game got me thinking about Mickey. After a quick google search I found some fun info.
Mickey first appeared in Plane Crazy and The Gallopin' Gaucho. Both failed due to lack of distribution. It was Steamboat Willie, in 1928, that is considered to be the first 'real' appearance of Mickey Mouse.
In Steamboat Willie it was hard for viewers to see Mickey's black hands against his black body. A couple of cartoon shorts later in 1929, Mickey was given his classic white gloves. The white gloves stayed, even after the switch to color in 1935.