Looking for Old Versions of Windows and MS DOS

Ok, I am starting a collection of Windows & DOS OS, "Full Versions"
(not upgrades) in original (shrink wrapped) retail boxes.

If any of you have these, I would be willing to buy them.
My email: ihatzi DeleteThis @hotmail.com

Here is a list of what I still need:

1981 MS DOS 1.0
1982 MS DOS 1.25
1983 MS DOS 2.0
1983 Microsoft Windows
1983 MS DOS 2.11
1984 MS DOS 3.0
1984 MS DOS 3.1
1985 Microsoft Windows 1.0
1987 MS DOS 3.3
1987 Microsoft Windows 2.0
1987 Microsoft Windows 386
1988 MS DOS 4.0
1988 Microsoft Windows 286
1989 MS DOS 4.01
1991 MS DOS 5.0
1992 MS DOS 5.0a
1992 Microsoft Windows 3.1
1993 MS DOS 6.0
1993 MS DOS 6.2
1993 MS DOS 6.21
1994 MS DOS 6.22
1994 Microsoft Windows 3.11
1995 MS DOS 7.0
1995 Microsoft Windows 95
1997 MS DOS 7.1
2000 Microsoft Windows 2000