United States. Bureau of Labor Statistics. "Occupational Wage Survey: Muskegon-Muskegon Heights, Michigan, May 1962 : Bulletin of the United States Bureau of Labor Statistics, No. 1303-68,"
Occupational Wage Survey
(1962).
https://fraser.stlouisfed.org/title/4510/item/497644, accessed on February 15, 2025.