Fifty-four hours' wages calculator, showing the amount earned in any number of hours from one hour to one hundred and sixty-two hours, at rates from 4s to 45s per week of 54 hours rising by threepence per week.
Allan, J. M.
Bain, A. G.
Dumbarton, 
[1890]
Joint authors: J.M. Allan and A.G. Bain.