1. We are able to report the 1933 Salaried Employees figure because the Census Bureau collected the information, even though it did not publish any statistics.
2. Hybrid Corn: An Exploration in the Economics of Technological Change
3. For Gibrat's law, see Hall, “The Relation.”
4. Bresnahan Timothy F. and Raff Daniel M. G. , “Intra-Industry Heterogeneity and Composition Effects in the Supply Response to the Great Depression: The American Motor Vehicle Industry 1929–1935” (Hoover Institution Domestic Studies Program Working Paper, Oct. 1990), p. 15.
5. The Relationship Between Firm Size and Firm Growth in the US Manufacturing Sector