Brown, Emily Clark
and United States. Bureau of Labor Statistics.
Joint Industrial Control in the Book and Job Printing Industry : Bulletin of the United States Bureau of Labor Statistics, No. 481 ,
Washington, D.C:
G.P.O.,
December 1928, https://fraser.stlouisfed.org/title/4060,
accessed on April 22, 2025.
@FedFRASER