Postive Items Represent An Absorption Of Cash; Negative Items, A Release. Source: Friedrich A. Lutz, "Corporate Cash Balances 1914-1943, " Manufacturing And Trade, 1945, Table D-3, Column 12
This NBER data series a05098 appears on the NBER website in Chapter 5 at http://www.nber.org/databases/macrohistory/contents/chapter05.html.
NBER Indicator: a05098
Release: NBER Macrohistory Database
National Bureau of Economic Research, Changes In Inventory Assets, Medium Sized and Small Manufacturing Corporations for United States [A05098USA174NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/A05098USA174NNBR/, June 3, 2015.