[Design of Marci Letter]

[Jorge_Stolfi]

That's a strange remark, and it is also wrong. Looking at the heights in bins of 10 pixels, of which there are 11, there is only one bin that has no entry

I was half-kidding, sorry.

But only half.  Here are the clusters I see:

   

The books A, C, F are clearly outliers: they are more "square" than the norm. The aspect ratio of A is ~1.185.  I don't see how one could get that aspect ratio by cutting sqrt(2) master sheets into m x n parts without leftovers.  Any ideas?  

Perhaps the contents dictated that shape?

All the best, --stolfi