Illinois miners' earnings, 1920-1921 ...
Series: Harvard social history/business preservation microfilm project -- 30707
Publisher: Illinois Coal Operators Association
Published: 1922
Place of publication: Chicago
Language: eng
Number of pages: 64
Subjects: Wages; Coal miners; Statistics
Notes: Title from cover.

"This publication is compiled and issued jointly by the three coal operators associations in Illinois: Illinois Coal Operators Association, Coal Operators Association of the 5th and 9th districts, Central Illinois Coal Operators Association."