It's been a little over thirty years since the debut of Mega Man 1 & 3 on DOS, and both titles are undergoing something of a renaissance. With Owlboy creator Simon S. Andersen's amazing "remake" mock-up making the rounds and The Gaming Historian's in-depth history on the subject, these delightfully crummy games have found new appreciation.
So to keep the ball rolling here, I'm happy to present you with this: Stephen Rozner's original Mega Man DOS design documents. The thirteen pages within include Rozner's handwritten notes, sketches and level design concepts. Unfortunately, Rozner threw a lot of other pieces away over the years. But at least we can study and admire this!
The documents come to us courtesy of the Gaming Historian himself, Norman Caruso. Some of these pieces were featured in Norm's "The Story of Mega Man on DOS", which brought us a wealth of previously unheard history. I highly recommend giving it a watch. You might just find yourself viewing these games in a different light.
Enjoy and thank you, Norm, for the generous donation!