Charlton PDF exists... If you build it... it will come.
I scanned the pages I use most from my 21st and 22nd editions then converted them into a PDF. Took an hour or so for each.
I own both books and I have never shared the PDF's I created. I use them while I am at Work.
I only have about 50-60 pages in each and mostly DOC to Multicolor in it.
But it makes for a handy reference when you label it with bookmarks..
Once you cut out all the "Blah blahs" and just keep the Serial Ranges/Price Lists it gets short quick.
1954 $5 Mod Series.. Click Bookmark in PDF.. BAM up in your face.
I will continue to buy the Guide each year but hauling one to/from work everyday would be annoying.
I fully support Charlton and will do as long as I can for see but making these PDF's for my personal use saves me soo much time flipping pages.
Krause has most of thier books in PDF Format which is also good... try going through 1200 Pages looking for 1 note from a specific Country. PDF Rules.. Plus it's even Searchable.
So if you want it in PDF... Scan it. As Long as it is for your own personal use and you own the book.. I don't believe it is illegal??