Must be my lucky day. I just found it also at:
http://www.peteweb.com/oldos.phpThere's a whole bunch of goodies there! Thank you so much, guys. I just finished downloading the eight disks and came here to post that I found it online --- and what do you know. Here, I thought I was the only one who kept these old OS's around. I did manage to find my PC Dos v3 and MS-DOS v3, 5, 6, and 6.2 diskettes. The Win3.11 disks should have been with them; I can't imagine where they went to.
But anyway, thanks so much for the immediate response! Now, back out to the garage to install Win3.11.
John, I think I'm going to download the disks from treeweasel, too. The TCP/IP update might come in handy... Thanks.