I have seen copies of Richard Avedon's printing maps and they are very intense.

For years I kept notes, and recommend that to my students; on the other hand with years of experience and the loss of materials those those aren't that important.

In Larry Bartletts book on Black and White printing (which i highly recommend , ) he shows printing maps, much simpler and certainly make more sense.

Perhaps some of these where work notes, ideas, not necessarily carried out when once working under safe light.