Source: Friedrich A. Lutz, "Corporate Cash Balances, 1914-1943, " Manufacturing And Trade, 1945, P. 119.
This NBER data series a12041 appears on the NBER website in Chapter 12 at http://www.nber.org/databases/macrohistory/contents/chapter12.html.
NBER Indicator: a12041
Release: NBER Macrohistory Database
National Bureau of Economic Research, Total Cash Payments, Medium-Sized and Small Manufacturing Corporations for United States [A12041USA144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A12041USA144NNBR/, September 2, 2015.