| Monopsony in the labor market WM Boal, MR Ransom Journal of economic literature 35 (1), 86-112, 1997 | 712 | 1997 |
| The economic history of Norway O Grytten EH. Net Encyclopedia: EH. Net Encyclopedia, 2008 | 177* | 2008 |
| Testing for employer monopsony in turn-of-the-century coal mining WM Boal The RAND Journal of Economics, 519-536, 1995 | 104 | 1995 |
| The effects of labor unions on employment, wages, and days of operation: coal mining in West Virginia WM Boal, J Pencavel The Quarterly Journal of Economics 109 (1), 267-298, 1994 | 92 | 1994 |
| The effect of unionism on accidents in US coal mining, 1897–1929 WM Boal Industrial Relations: A Journal of Economy and Society 48 (1), 97-120, 2009 | 64 | 2009 |
| Unionism and productivity in West Virginia Coal mining WM Boal ILR Review 43 (4), 390-405, 1990 | 40 | 1990 |
| Work intensity and worker safety in early twentieth-century coal mining WM Boal Explorations in Economic History 70, 132-149, 2018 | 23 | 2018 |
| New estimates of paid-up membership in the United Mine Workers, 1902–29, by state and province WM Boal Labor History 47 (4), 537-546, 2006 | 12 | 2006 |
| The effect of unionization on productivity: evidence from a long panel of coal mines WM Boal ILR Review 70 (5), 1254-1282, 2017 | 10 | 2017 |
| The effect of minimum salaries on employment of teachers: A test of the monopsony model WM Boal Southern Economic Journal 75 (3), 611-638, 2009 | 8 | 2009 |
| Empirical tests of labor monopsony: School teachers in Missouri MR Ransom, WM Boal, PM Beck Mimeo, 2000 | 8 | 2000 |
| The Unionization of West Virginia Coal, 1900-1935: a Chronology WM Boal Department of Economics, Ohio State University, 1992 | 7 | 1992 |
| What did Unions do? The case of Illinois Coal Mining in the 1880s WM Boal Journal of Labor Research 38 (4), 439-474, 2017 | 6 | 2017 |
| Union response to mechanization in US bituminous coal WM Boal Labour Economics 1 (3-4), 243-267, 1994 | 6 | 1994 |
| Estimates of unionism in West Virginia coal, 1900–1935 WM Boal Labor History 35 (3), 429-441, 1994 | 6 | 1994 |
| The effect of minimum salaries on employment of teachers WM Boal Unpublished paper, Drake University, 2005 | 3 | 2005 |
| The Effects of Labor Unions on Employment W Boal, J Pencavel Wages and Days, 1994 | 3 | 1994 |
| Unionism and productivity in West Virginia coal mining WM Boal Stanford Univ., CA (USA), 1985 | 3 | 1985 |
| The effect of unionism on accidents in US coal mining, 1897-1929: errata WM Boal Retrieved from wmboal. com/research, 2016 | 2 | 2016 |
| Unionism and productivity in West Virginia coal mining: a longer view WM Boal Des Moines: Drake University, 2014 | 1 | 2014 |
