Being new to the website, I don't know if this topic has been covered, but there is a washing machine museum in Eaton, CO that a friend and I toured a number of years ago. The owner was gracious enough to host us with a private tour on a weekend day. The place is huge and he has every imaginable vintage machine out there. You can see his website at oldewash.com. Sadly, it looks like age caught up with him and he made some attempts at finding someone to take over the project, I don't know if he found success in that. The website says that he is not giving tours right now. Check out the website, there is a lot there if you are interested in ultra vintage machines.
WWW.OLDEWASH.COM
WWW.OLDEWASH.COM