The Pre-Digital Art of Crafting Notes

To the Editor:

In "Noted" (The Chronicle Review, January 11), Geoffrey Nunberg has a section on "Digital Note-Taking Systems" without recognizing that these need not be electronic.

When I was a grad student at Columbia in the pre-laptop 1960s, I built myself such a system out of a wooden box, a wire hanger, and a stack of 8x10 index cards. (I can't remember where I got the idea, but it was certainly not original.) Using a multiple