Dear colleagues

Monitoring this very useful exchange of examples of appearances of the circular flow diagrams in the early 20th century, I would like call your attention to two circular flow diagrams that actually became the blue prints for the first macro-econometric models built in the late 1930s, so preceding National Accounts:

The 'Tableau Economique', as Ragnar Frisch called it, appeared in his famous 1933 Rocking Horse article: Propagation and impulse problems in dynamic economics. In Economic Essays in Honour of Gustav Cassel (pp. 171-205). London: Allen and Unwin. And a diagram of a 'Volkswirtschaftliches Kreislauf', as Jan Tinbergen called it, appeared in his 1935 Quantitative Fragen der Konjunkturpolitik. Welwirtschaftliches Archiv 42 II: 366-399.

Best wishes,

Marcel Boumans