Vid1900 is a pinside.com member who has a tremendous knowledge of pinball history and repair. His guides are so well done that they have been included as sticky topics on pinside.com.

In order to make them easier to access, a pinsider has converted them to .pdf and uploaded them to Dropbox.

They can be found at https://www.dropbox.com/sh/ec0fk9vgy0wvysc/vXKp5Spsla.