Monogram chart would be useless unless it contained all of the known font's.
I have many of the font's used but more than likely not all.

The HDD chip S D Swart is talking about above is the same font as the PDB.
When I sent for that card back in 1966, I asked Herz for the ID as HOD.
He knew better, and I started getting as many printer fonts as I could get.

When I sent for the PDB, I asked for POD and PCD (the die is a little light on the right side of the D,) even on the card stamp. No card found. Then I remembered the HDD card from 14 years prior.

Once you get the card the letters are usually typed on the card under the die stamp.