These are scans of the PDP 8, 9, 10, 11 reference cards that I have.
In all cases there are 3 versions: PDF, JPG and TIFF Each format has
advantages and disadvantages, so I am offering all three and can chose.

All were attempted at 600 DPI, as I was unable to scan at an higher
resolution reliably.

The PDP11 and PDP10 cards were much larger than either US Letter or Legal
so were scan such that no data was lost but page number may seem strange.
You can put them back in any order you like.

CTC 12-July-2024