What typically happens is over the several dozen copies of the original it was handled by one or more people with no electronics knowledge that have no idea what the values sheet is and thusly deleted it.
The description and diagram stay mostly intact but the components values reference gets lost. You pretty much out of luck without it.
If you have ever read those alternative energy secrets reveled or like books or reference sites they are also full of incomplete schematics, schematics without descriptions, schematics without part value references, and incomplete or inaccurate descriptive text.
I get the impression this likely came from one of them.