I noticed there wasn't any manuals for the Kingston brand in the Library. We have a copy we can scan if you guys want to add it to your archives. Not sure who to contact about that.
Also, we're getting ready to ebay the vacuum and the manual if anyone is interested please contact us. We would rather it go to an enthusiast.
The vac is a Kingston Model 4D. The book is stamped with the original sales price of $89.95 from Edison Vac Co in St. Louis. My Grandmother-in-law lived in St Charles and kept everything evidently.