[fully lost] Windows 1.0 Developer Releases 1-4
Windows 1.0 was giving developer releases and the oldest found version is DR5 which the other developer releases have not been found, due to it being made on October 31st 1984 and the first mention of it occuring on the Fall 1983 Codex issue, leading me to believe that the other developer releases do exist but may just be lost to time, requiring dos 2.x or 3.0 to run this also leads me to believe the other developer releases run on MS-DOS 1.x the possibility of these other developer releases are highly low but not impossible