Series Is Presented Here As Two Variables--(1)--Original Data, 1915-1921 (2)--Original Data, 1921-1943 Source: Friedrich A. Lutz, Corporate Cash Balances 1914-1943, Manufacturing And Trade (1945), Pp.117-118.
This NBER data series a09055a appears on the NBER website in Chapter 9 at http://www.nber.org/databases/macrohistory/contents/chapter09.html.
NBER Indicator: a09055a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Changes In Accounts Receivable, Large Manufacturing Corporations for United States [A0955AUSA144NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A0955AUSA144NNBR/, October 4, 2015.