I think that all files except Gogol's editable version have been restored.
web.archive.org has it:https://web.archive.org/web/20180328233937/http://www.robgray.com/temp/Due-pinout-fillable-form.pdf
After much discussion about pinout diagrams and Arduino documentaion I decided it's time to put my money time where my mouth is and create a pinout diagram for the DueNOTE: Regardless of new posts this first post will always point to the current versions of the drawing. ANOTHER NOTE: This might look pretty flash but it is NOT VERIFIED and NOT OFFICIAL it's very easy to make a mistake with this sort of thing. This means that you should not bet the farm by doing a design based on this drawing without checking what you are doing.UPLOAD HISTORY: 7 Apr 2014Gogol's editable version added.8 Jun 2013Errata fixed.26 Feb 2013Some new annotations added.SPI Arduino pins numbers added.The SDA1 and SCL1 pins were swapped, as were all related labels except D71 and D70. Fixed.PDF version added.11 Nov 2012First version.ERRATA/CHANGES/ADDITIONS: (not available in the latest version but will appear next time I upload)None known at this time.LATEST VERSION: (8 Jun 13)Web version (176kB) (900x1004, same as above)Due-pinout-WEB.pngA4 version (628kB) (2676x2400px)Due-pinout-A4.pngA3 version (884kB) (3679x3300px)Due-pinout-A3.pngCorelDRAW vector file (672kB)Due-pinout.cdrSVG vector file (2.0MB) Due-pinout.svgPDF file (569kB) Due-pinout.pdfNote the CC BY-ND license, you can use this diagram for any purpose commercial or non-commercial but you cannot make changes. If you want a custom size or version email me. Editable PDF version (676k)This allows you to enter your project's functions for each pin. With thanks to member Gogol.Due-pinout-fillable-form.pdf______Rob