Catalogued

GE-McKinsey nine-box matrix

Made by: McKinsey and Company for General Electric; no individual documented
Year: 1970s
Field: Management and industry
Kind: Concept diagram
Room: How a group spreads — Placed by reading its description, not yet studiedCould also hang in: Values across a surface

Skeleton drawing, not the original plate

8 other forms share this skeleton

Source

Attribution less certain: contested, or no single inventor recorded