Baselines, xHeight, and IBM Executive Typewriters

After taking another look at the disputed memos, I noticed that the baselines of the w's were above the baselines of other letters. On the other hand, the tops of the appropriate lower-case letters (acegmnopqrsuvwxyz) were all at the same xheight. The latter is more important in view of the fact that repeated copying can cause pointed parts of letters to fade.

Just another brick in wall …