One of the guys over on OldGMCtrucks posted a link to the http://www.gmpartswiki.com/browse I haven't quite figured out how to use it, but it appears to be a great resource.
I clicked on the GMC book. When it opened, there is a small detailed page at the top right corner that I clicked on. That took me to the next page. Keep doing that to go through the book?
I agree it isn't the best. But text is "searchable". Using 50 GMC Master Parts Book as the target and looking for a bearing, start here: http://www.gmpartswiki.com/query then fill in Query String bearing Book Type Parts Catalog Single Book December 1950 Parts Book X-151004 Books Covering GMC Books Covering GMC Light Truck Books Covering Any Year and push the search button
Great resource ! Thanks Bill. I whas looking fore some spesific information around a Camaro Saginaw 4 speed transmission and came up with a lot of information. Found it easyest to use the search buttom and spesify my search. Spread the news Martinius.